Commit 5db79c0679e542a156de54e97be8901aeaa7638a
Committed by
David S. Miller
1 parent
ff2aed7da1
Exists in
master
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39 other branches
iucv: get rid of compile warning
-Wunused-but-set-variable generates a compile warning. The affected variable is removed. Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com> Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Showing 1 changed file with 2 additions and 2 deletions Inline Diff
net/iucv/iucv.c
1 | /* | 1 | /* |
2 | * IUCV base infrastructure. | 2 | * IUCV base infrastructure. |
3 | * | 3 | * |
4 | * Copyright IBM Corp. 2001, 2009 | 4 | * Copyright IBM Corp. 2001, 2009 |
5 | * | 5 | * |
6 | * Author(s): | 6 | * Author(s): |
7 | * Original source: | 7 | * Original source: |
8 | * Alan Altmark (Alan_Altmark@us.ibm.com) Sept. 2000 | 8 | * Alan Altmark (Alan_Altmark@us.ibm.com) Sept. 2000 |
9 | * Xenia Tkatschow (xenia@us.ibm.com) | 9 | * Xenia Tkatschow (xenia@us.ibm.com) |
10 | * 2Gb awareness and general cleanup: | 10 | * 2Gb awareness and general cleanup: |
11 | * Fritz Elfert (elfert@de.ibm.com, felfert@millenux.com) | 11 | * Fritz Elfert (elfert@de.ibm.com, felfert@millenux.com) |
12 | * Rewritten for af_iucv: | 12 | * Rewritten for af_iucv: |
13 | * Martin Schwidefsky <schwidefsky@de.ibm.com> | 13 | * Martin Schwidefsky <schwidefsky@de.ibm.com> |
14 | * PM functions: | 14 | * PM functions: |
15 | * Ursula Braun (ursula.braun@de.ibm.com) | 15 | * Ursula Braun (ursula.braun@de.ibm.com) |
16 | * | 16 | * |
17 | * Documentation used: | 17 | * Documentation used: |
18 | * The original source | 18 | * The original source |
19 | * CP Programming Service, IBM document # SC24-5760 | 19 | * CP Programming Service, IBM document # SC24-5760 |
20 | * | 20 | * |
21 | * This program is free software; you can redistribute it and/or modify | 21 | * This program is free software; you can redistribute it and/or modify |
22 | * it under the terms of the GNU General Public License as published by | 22 | * it under the terms of the GNU General Public License as published by |
23 | * the Free Software Foundation; either version 2, or (at your option) | 23 | * the Free Software Foundation; either version 2, or (at your option) |
24 | * any later version. | 24 | * any later version. |
25 | * | 25 | * |
26 | * This program is distributed in the hope that it will be useful, | 26 | * This program is distributed in the hope that it will be useful, |
27 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | 27 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
28 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | 28 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
29 | * GNU General Public License for more details. | 29 | * GNU General Public License for more details. |
30 | * | 30 | * |
31 | * You should have received a copy of the GNU General Public License | 31 | * You should have received a copy of the GNU General Public License |
32 | * along with this program; if not, write to the Free Software | 32 | * along with this program; if not, write to the Free Software |
33 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | 33 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
34 | */ | 34 | */ |
35 | 35 | ||
36 | #define KMSG_COMPONENT "iucv" | 36 | #define KMSG_COMPONENT "iucv" |
37 | #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt | 37 | #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt |
38 | 38 | ||
39 | #include <linux/kernel_stat.h> | 39 | #include <linux/kernel_stat.h> |
40 | #include <linux/module.h> | 40 | #include <linux/module.h> |
41 | #include <linux/moduleparam.h> | 41 | #include <linux/moduleparam.h> |
42 | #include <linux/spinlock.h> | 42 | #include <linux/spinlock.h> |
43 | #include <linux/kernel.h> | 43 | #include <linux/kernel.h> |
44 | #include <linux/slab.h> | 44 | #include <linux/slab.h> |
45 | #include <linux/init.h> | 45 | #include <linux/init.h> |
46 | #include <linux/interrupt.h> | 46 | #include <linux/interrupt.h> |
47 | #include <linux/list.h> | 47 | #include <linux/list.h> |
48 | #include <linux/errno.h> | 48 | #include <linux/errno.h> |
49 | #include <linux/err.h> | 49 | #include <linux/err.h> |
50 | #include <linux/device.h> | 50 | #include <linux/device.h> |
51 | #include <linux/cpu.h> | 51 | #include <linux/cpu.h> |
52 | #include <linux/reboot.h> | 52 | #include <linux/reboot.h> |
53 | #include <net/iucv/iucv.h> | 53 | #include <net/iucv/iucv.h> |
54 | #include <asm/atomic.h> | 54 | #include <asm/atomic.h> |
55 | #include <asm/ebcdic.h> | 55 | #include <asm/ebcdic.h> |
56 | #include <asm/io.h> | 56 | #include <asm/io.h> |
57 | #include <asm/s390_ext.h> | 57 | #include <asm/s390_ext.h> |
58 | #include <asm/smp.h> | 58 | #include <asm/smp.h> |
59 | 59 | ||
60 | /* | 60 | /* |
61 | * FLAGS: | 61 | * FLAGS: |
62 | * All flags are defined in the field IPFLAGS1 of each function | 62 | * All flags are defined in the field IPFLAGS1 of each function |
63 | * and can be found in CP Programming Services. | 63 | * and can be found in CP Programming Services. |
64 | * IPSRCCLS - Indicates you have specified a source class. | 64 | * IPSRCCLS - Indicates you have specified a source class. |
65 | * IPTRGCLS - Indicates you have specified a target class. | 65 | * IPTRGCLS - Indicates you have specified a target class. |
66 | * IPFGPID - Indicates you have specified a pathid. | 66 | * IPFGPID - Indicates you have specified a pathid. |
67 | * IPFGMID - Indicates you have specified a message ID. | 67 | * IPFGMID - Indicates you have specified a message ID. |
68 | * IPNORPY - Indicates a one-way message. No reply expected. | 68 | * IPNORPY - Indicates a one-way message. No reply expected. |
69 | * IPALL - Indicates that all paths are affected. | 69 | * IPALL - Indicates that all paths are affected. |
70 | */ | 70 | */ |
71 | #define IUCV_IPSRCCLS 0x01 | 71 | #define IUCV_IPSRCCLS 0x01 |
72 | #define IUCV_IPTRGCLS 0x01 | 72 | #define IUCV_IPTRGCLS 0x01 |
73 | #define IUCV_IPFGPID 0x02 | 73 | #define IUCV_IPFGPID 0x02 |
74 | #define IUCV_IPFGMID 0x04 | 74 | #define IUCV_IPFGMID 0x04 |
75 | #define IUCV_IPNORPY 0x10 | 75 | #define IUCV_IPNORPY 0x10 |
76 | #define IUCV_IPALL 0x80 | 76 | #define IUCV_IPALL 0x80 |
77 | 77 | ||
78 | static int iucv_bus_match(struct device *dev, struct device_driver *drv) | 78 | static int iucv_bus_match(struct device *dev, struct device_driver *drv) |
79 | { | 79 | { |
80 | return 0; | 80 | return 0; |
81 | } | 81 | } |
82 | 82 | ||
83 | enum iucv_pm_states { | 83 | enum iucv_pm_states { |
84 | IUCV_PM_INITIAL = 0, | 84 | IUCV_PM_INITIAL = 0, |
85 | IUCV_PM_FREEZING = 1, | 85 | IUCV_PM_FREEZING = 1, |
86 | IUCV_PM_THAWING = 2, | 86 | IUCV_PM_THAWING = 2, |
87 | IUCV_PM_RESTORING = 3, | 87 | IUCV_PM_RESTORING = 3, |
88 | }; | 88 | }; |
89 | static enum iucv_pm_states iucv_pm_state; | 89 | static enum iucv_pm_states iucv_pm_state; |
90 | 90 | ||
91 | static int iucv_pm_prepare(struct device *); | 91 | static int iucv_pm_prepare(struct device *); |
92 | static void iucv_pm_complete(struct device *); | 92 | static void iucv_pm_complete(struct device *); |
93 | static int iucv_pm_freeze(struct device *); | 93 | static int iucv_pm_freeze(struct device *); |
94 | static int iucv_pm_thaw(struct device *); | 94 | static int iucv_pm_thaw(struct device *); |
95 | static int iucv_pm_restore(struct device *); | 95 | static int iucv_pm_restore(struct device *); |
96 | 96 | ||
97 | static const struct dev_pm_ops iucv_pm_ops = { | 97 | static const struct dev_pm_ops iucv_pm_ops = { |
98 | .prepare = iucv_pm_prepare, | 98 | .prepare = iucv_pm_prepare, |
99 | .complete = iucv_pm_complete, | 99 | .complete = iucv_pm_complete, |
100 | .freeze = iucv_pm_freeze, | 100 | .freeze = iucv_pm_freeze, |
101 | .thaw = iucv_pm_thaw, | 101 | .thaw = iucv_pm_thaw, |
102 | .restore = iucv_pm_restore, | 102 | .restore = iucv_pm_restore, |
103 | }; | 103 | }; |
104 | 104 | ||
105 | struct bus_type iucv_bus = { | 105 | struct bus_type iucv_bus = { |
106 | .name = "iucv", | 106 | .name = "iucv", |
107 | .match = iucv_bus_match, | 107 | .match = iucv_bus_match, |
108 | .pm = &iucv_pm_ops, | 108 | .pm = &iucv_pm_ops, |
109 | }; | 109 | }; |
110 | EXPORT_SYMBOL(iucv_bus); | 110 | EXPORT_SYMBOL(iucv_bus); |
111 | 111 | ||
112 | struct device *iucv_root; | 112 | struct device *iucv_root; |
113 | EXPORT_SYMBOL(iucv_root); | 113 | EXPORT_SYMBOL(iucv_root); |
114 | 114 | ||
115 | static int iucv_available; | 115 | static int iucv_available; |
116 | 116 | ||
117 | /* General IUCV interrupt structure */ | 117 | /* General IUCV interrupt structure */ |
118 | struct iucv_irq_data { | 118 | struct iucv_irq_data { |
119 | u16 ippathid; | 119 | u16 ippathid; |
120 | u8 ipflags1; | 120 | u8 ipflags1; |
121 | u8 iptype; | 121 | u8 iptype; |
122 | u32 res2[8]; | 122 | u32 res2[8]; |
123 | }; | 123 | }; |
124 | 124 | ||
125 | struct iucv_irq_list { | 125 | struct iucv_irq_list { |
126 | struct list_head list; | 126 | struct list_head list; |
127 | struct iucv_irq_data data; | 127 | struct iucv_irq_data data; |
128 | }; | 128 | }; |
129 | 129 | ||
130 | static struct iucv_irq_data *iucv_irq_data[NR_CPUS]; | 130 | static struct iucv_irq_data *iucv_irq_data[NR_CPUS]; |
131 | static cpumask_t iucv_buffer_cpumask = CPU_MASK_NONE; | 131 | static cpumask_t iucv_buffer_cpumask = CPU_MASK_NONE; |
132 | static cpumask_t iucv_irq_cpumask = CPU_MASK_NONE; | 132 | static cpumask_t iucv_irq_cpumask = CPU_MASK_NONE; |
133 | 133 | ||
134 | /* | 134 | /* |
135 | * Queue of interrupt buffers lock for delivery via the tasklet | 135 | * Queue of interrupt buffers lock for delivery via the tasklet |
136 | * (fast but can't call smp_call_function). | 136 | * (fast but can't call smp_call_function). |
137 | */ | 137 | */ |
138 | static LIST_HEAD(iucv_task_queue); | 138 | static LIST_HEAD(iucv_task_queue); |
139 | 139 | ||
140 | /* | 140 | /* |
141 | * The tasklet for fast delivery of iucv interrupts. | 141 | * The tasklet for fast delivery of iucv interrupts. |
142 | */ | 142 | */ |
143 | static void iucv_tasklet_fn(unsigned long); | 143 | static void iucv_tasklet_fn(unsigned long); |
144 | static DECLARE_TASKLET(iucv_tasklet, iucv_tasklet_fn,0); | 144 | static DECLARE_TASKLET(iucv_tasklet, iucv_tasklet_fn,0); |
145 | 145 | ||
146 | /* | 146 | /* |
147 | * Queue of interrupt buffers for delivery via a work queue | 147 | * Queue of interrupt buffers for delivery via a work queue |
148 | * (slower but can call smp_call_function). | 148 | * (slower but can call smp_call_function). |
149 | */ | 149 | */ |
150 | static LIST_HEAD(iucv_work_queue); | 150 | static LIST_HEAD(iucv_work_queue); |
151 | 151 | ||
152 | /* | 152 | /* |
153 | * The work element to deliver path pending interrupts. | 153 | * The work element to deliver path pending interrupts. |
154 | */ | 154 | */ |
155 | static void iucv_work_fn(struct work_struct *work); | 155 | static void iucv_work_fn(struct work_struct *work); |
156 | static DECLARE_WORK(iucv_work, iucv_work_fn); | 156 | static DECLARE_WORK(iucv_work, iucv_work_fn); |
157 | 157 | ||
158 | /* | 158 | /* |
159 | * Spinlock protecting task and work queue. | 159 | * Spinlock protecting task and work queue. |
160 | */ | 160 | */ |
161 | static DEFINE_SPINLOCK(iucv_queue_lock); | 161 | static DEFINE_SPINLOCK(iucv_queue_lock); |
162 | 162 | ||
163 | enum iucv_command_codes { | 163 | enum iucv_command_codes { |
164 | IUCV_QUERY = 0, | 164 | IUCV_QUERY = 0, |
165 | IUCV_RETRIEVE_BUFFER = 2, | 165 | IUCV_RETRIEVE_BUFFER = 2, |
166 | IUCV_SEND = 4, | 166 | IUCV_SEND = 4, |
167 | IUCV_RECEIVE = 5, | 167 | IUCV_RECEIVE = 5, |
168 | IUCV_REPLY = 6, | 168 | IUCV_REPLY = 6, |
169 | IUCV_REJECT = 8, | 169 | IUCV_REJECT = 8, |
170 | IUCV_PURGE = 9, | 170 | IUCV_PURGE = 9, |
171 | IUCV_ACCEPT = 10, | 171 | IUCV_ACCEPT = 10, |
172 | IUCV_CONNECT = 11, | 172 | IUCV_CONNECT = 11, |
173 | IUCV_DECLARE_BUFFER = 12, | 173 | IUCV_DECLARE_BUFFER = 12, |
174 | IUCV_QUIESCE = 13, | 174 | IUCV_QUIESCE = 13, |
175 | IUCV_RESUME = 14, | 175 | IUCV_RESUME = 14, |
176 | IUCV_SEVER = 15, | 176 | IUCV_SEVER = 15, |
177 | IUCV_SETMASK = 16, | 177 | IUCV_SETMASK = 16, |
178 | IUCV_SETCONTROLMASK = 17, | 178 | IUCV_SETCONTROLMASK = 17, |
179 | }; | 179 | }; |
180 | 180 | ||
181 | /* | 181 | /* |
182 | * Error messages that are used with the iucv_sever function. They get | 182 | * Error messages that are used with the iucv_sever function. They get |
183 | * converted to EBCDIC. | 183 | * converted to EBCDIC. |
184 | */ | 184 | */ |
185 | static char iucv_error_no_listener[16] = "NO LISTENER"; | 185 | static char iucv_error_no_listener[16] = "NO LISTENER"; |
186 | static char iucv_error_no_memory[16] = "NO MEMORY"; | 186 | static char iucv_error_no_memory[16] = "NO MEMORY"; |
187 | static char iucv_error_pathid[16] = "INVALID PATHID"; | 187 | static char iucv_error_pathid[16] = "INVALID PATHID"; |
188 | 188 | ||
189 | /* | 189 | /* |
190 | * iucv_handler_list: List of registered handlers. | 190 | * iucv_handler_list: List of registered handlers. |
191 | */ | 191 | */ |
192 | static LIST_HEAD(iucv_handler_list); | 192 | static LIST_HEAD(iucv_handler_list); |
193 | 193 | ||
194 | /* | 194 | /* |
195 | * iucv_path_table: an array of iucv_path structures. | 195 | * iucv_path_table: an array of iucv_path structures. |
196 | */ | 196 | */ |
197 | static struct iucv_path **iucv_path_table; | 197 | static struct iucv_path **iucv_path_table; |
198 | static unsigned long iucv_max_pathid; | 198 | static unsigned long iucv_max_pathid; |
199 | 199 | ||
200 | /* | 200 | /* |
201 | * iucv_lock: spinlock protecting iucv_handler_list and iucv_pathid_table | 201 | * iucv_lock: spinlock protecting iucv_handler_list and iucv_pathid_table |
202 | */ | 202 | */ |
203 | static DEFINE_SPINLOCK(iucv_table_lock); | 203 | static DEFINE_SPINLOCK(iucv_table_lock); |
204 | 204 | ||
205 | /* | 205 | /* |
206 | * iucv_active_cpu: contains the number of the cpu executing the tasklet | 206 | * iucv_active_cpu: contains the number of the cpu executing the tasklet |
207 | * or the work handler. Needed for iucv_path_sever called from tasklet. | 207 | * or the work handler. Needed for iucv_path_sever called from tasklet. |
208 | */ | 208 | */ |
209 | static int iucv_active_cpu = -1; | 209 | static int iucv_active_cpu = -1; |
210 | 210 | ||
211 | /* | 211 | /* |
212 | * Mutex and wait queue for iucv_register/iucv_unregister. | 212 | * Mutex and wait queue for iucv_register/iucv_unregister. |
213 | */ | 213 | */ |
214 | static DEFINE_MUTEX(iucv_register_mutex); | 214 | static DEFINE_MUTEX(iucv_register_mutex); |
215 | 215 | ||
216 | /* | 216 | /* |
217 | * Counter for number of non-smp capable handlers. | 217 | * Counter for number of non-smp capable handlers. |
218 | */ | 218 | */ |
219 | static int iucv_nonsmp_handler; | 219 | static int iucv_nonsmp_handler; |
220 | 220 | ||
221 | /* | 221 | /* |
222 | * IUCV control data structure. Used by iucv_path_accept, iucv_path_connect, | 222 | * IUCV control data structure. Used by iucv_path_accept, iucv_path_connect, |
223 | * iucv_path_quiesce and iucv_path_sever. | 223 | * iucv_path_quiesce and iucv_path_sever. |
224 | */ | 224 | */ |
225 | struct iucv_cmd_control { | 225 | struct iucv_cmd_control { |
226 | u16 ippathid; | 226 | u16 ippathid; |
227 | u8 ipflags1; | 227 | u8 ipflags1; |
228 | u8 iprcode; | 228 | u8 iprcode; |
229 | u16 ipmsglim; | 229 | u16 ipmsglim; |
230 | u16 res1; | 230 | u16 res1; |
231 | u8 ipvmid[8]; | 231 | u8 ipvmid[8]; |
232 | u8 ipuser[16]; | 232 | u8 ipuser[16]; |
233 | u8 iptarget[8]; | 233 | u8 iptarget[8]; |
234 | } __attribute__ ((packed,aligned(8))); | 234 | } __attribute__ ((packed,aligned(8))); |
235 | 235 | ||
236 | /* | 236 | /* |
237 | * Data in parameter list iucv structure. Used by iucv_message_send, | 237 | * Data in parameter list iucv structure. Used by iucv_message_send, |
238 | * iucv_message_send2way and iucv_message_reply. | 238 | * iucv_message_send2way and iucv_message_reply. |
239 | */ | 239 | */ |
240 | struct iucv_cmd_dpl { | 240 | struct iucv_cmd_dpl { |
241 | u16 ippathid; | 241 | u16 ippathid; |
242 | u8 ipflags1; | 242 | u8 ipflags1; |
243 | u8 iprcode; | 243 | u8 iprcode; |
244 | u32 ipmsgid; | 244 | u32 ipmsgid; |
245 | u32 iptrgcls; | 245 | u32 iptrgcls; |
246 | u8 iprmmsg[8]; | 246 | u8 iprmmsg[8]; |
247 | u32 ipsrccls; | 247 | u32 ipsrccls; |
248 | u32 ipmsgtag; | 248 | u32 ipmsgtag; |
249 | u32 ipbfadr2; | 249 | u32 ipbfadr2; |
250 | u32 ipbfln2f; | 250 | u32 ipbfln2f; |
251 | u32 res; | 251 | u32 res; |
252 | } __attribute__ ((packed,aligned(8))); | 252 | } __attribute__ ((packed,aligned(8))); |
253 | 253 | ||
254 | /* | 254 | /* |
255 | * Data in buffer iucv structure. Used by iucv_message_receive, | 255 | * Data in buffer iucv structure. Used by iucv_message_receive, |
256 | * iucv_message_reject, iucv_message_send, iucv_message_send2way | 256 | * iucv_message_reject, iucv_message_send, iucv_message_send2way |
257 | * and iucv_declare_cpu. | 257 | * and iucv_declare_cpu. |
258 | */ | 258 | */ |
259 | struct iucv_cmd_db { | 259 | struct iucv_cmd_db { |
260 | u16 ippathid; | 260 | u16 ippathid; |
261 | u8 ipflags1; | 261 | u8 ipflags1; |
262 | u8 iprcode; | 262 | u8 iprcode; |
263 | u32 ipmsgid; | 263 | u32 ipmsgid; |
264 | u32 iptrgcls; | 264 | u32 iptrgcls; |
265 | u32 ipbfadr1; | 265 | u32 ipbfadr1; |
266 | u32 ipbfln1f; | 266 | u32 ipbfln1f; |
267 | u32 ipsrccls; | 267 | u32 ipsrccls; |
268 | u32 ipmsgtag; | 268 | u32 ipmsgtag; |
269 | u32 ipbfadr2; | 269 | u32 ipbfadr2; |
270 | u32 ipbfln2f; | 270 | u32 ipbfln2f; |
271 | u32 res; | 271 | u32 res; |
272 | } __attribute__ ((packed,aligned(8))); | 272 | } __attribute__ ((packed,aligned(8))); |
273 | 273 | ||
274 | /* | 274 | /* |
275 | * Purge message iucv structure. Used by iucv_message_purge. | 275 | * Purge message iucv structure. Used by iucv_message_purge. |
276 | */ | 276 | */ |
277 | struct iucv_cmd_purge { | 277 | struct iucv_cmd_purge { |
278 | u16 ippathid; | 278 | u16 ippathid; |
279 | u8 ipflags1; | 279 | u8 ipflags1; |
280 | u8 iprcode; | 280 | u8 iprcode; |
281 | u32 ipmsgid; | 281 | u32 ipmsgid; |
282 | u8 ipaudit[3]; | 282 | u8 ipaudit[3]; |
283 | u8 res1[5]; | 283 | u8 res1[5]; |
284 | u32 res2; | 284 | u32 res2; |
285 | u32 ipsrccls; | 285 | u32 ipsrccls; |
286 | u32 ipmsgtag; | 286 | u32 ipmsgtag; |
287 | u32 res3[3]; | 287 | u32 res3[3]; |
288 | } __attribute__ ((packed,aligned(8))); | 288 | } __attribute__ ((packed,aligned(8))); |
289 | 289 | ||
290 | /* | 290 | /* |
291 | * Set mask iucv structure. Used by iucv_enable_cpu. | 291 | * Set mask iucv structure. Used by iucv_enable_cpu. |
292 | */ | 292 | */ |
293 | struct iucv_cmd_set_mask { | 293 | struct iucv_cmd_set_mask { |
294 | u8 ipmask; | 294 | u8 ipmask; |
295 | u8 res1[2]; | 295 | u8 res1[2]; |
296 | u8 iprcode; | 296 | u8 iprcode; |
297 | u32 res2[9]; | 297 | u32 res2[9]; |
298 | } __attribute__ ((packed,aligned(8))); | 298 | } __attribute__ ((packed,aligned(8))); |
299 | 299 | ||
300 | union iucv_param { | 300 | union iucv_param { |
301 | struct iucv_cmd_control ctrl; | 301 | struct iucv_cmd_control ctrl; |
302 | struct iucv_cmd_dpl dpl; | 302 | struct iucv_cmd_dpl dpl; |
303 | struct iucv_cmd_db db; | 303 | struct iucv_cmd_db db; |
304 | struct iucv_cmd_purge purge; | 304 | struct iucv_cmd_purge purge; |
305 | struct iucv_cmd_set_mask set_mask; | 305 | struct iucv_cmd_set_mask set_mask; |
306 | }; | 306 | }; |
307 | 307 | ||
308 | /* | 308 | /* |
309 | * Anchor for per-cpu IUCV command parameter block. | 309 | * Anchor for per-cpu IUCV command parameter block. |
310 | */ | 310 | */ |
311 | static union iucv_param *iucv_param[NR_CPUS]; | 311 | static union iucv_param *iucv_param[NR_CPUS]; |
312 | static union iucv_param *iucv_param_irq[NR_CPUS]; | 312 | static union iucv_param *iucv_param_irq[NR_CPUS]; |
313 | 313 | ||
314 | /** | 314 | /** |
315 | * iucv_call_b2f0 | 315 | * iucv_call_b2f0 |
316 | * @code: identifier of IUCV call to CP. | 316 | * @code: identifier of IUCV call to CP. |
317 | * @parm: pointer to a struct iucv_parm block | 317 | * @parm: pointer to a struct iucv_parm block |
318 | * | 318 | * |
319 | * Calls CP to execute IUCV commands. | 319 | * Calls CP to execute IUCV commands. |
320 | * | 320 | * |
321 | * Returns the result of the CP IUCV call. | 321 | * Returns the result of the CP IUCV call. |
322 | */ | 322 | */ |
323 | static inline int iucv_call_b2f0(int command, union iucv_param *parm) | 323 | static inline int iucv_call_b2f0(int command, union iucv_param *parm) |
324 | { | 324 | { |
325 | register unsigned long reg0 asm ("0"); | 325 | register unsigned long reg0 asm ("0"); |
326 | register unsigned long reg1 asm ("1"); | 326 | register unsigned long reg1 asm ("1"); |
327 | int ccode; | 327 | int ccode; |
328 | 328 | ||
329 | reg0 = command; | 329 | reg0 = command; |
330 | reg1 = virt_to_phys(parm); | 330 | reg1 = virt_to_phys(parm); |
331 | asm volatile( | 331 | asm volatile( |
332 | " .long 0xb2f01000\n" | 332 | " .long 0xb2f01000\n" |
333 | " ipm %0\n" | 333 | " ipm %0\n" |
334 | " srl %0,28\n" | 334 | " srl %0,28\n" |
335 | : "=d" (ccode), "=m" (*parm), "+d" (reg0), "+a" (reg1) | 335 | : "=d" (ccode), "=m" (*parm), "+d" (reg0), "+a" (reg1) |
336 | : "m" (*parm) : "cc"); | 336 | : "m" (*parm) : "cc"); |
337 | return (ccode == 1) ? parm->ctrl.iprcode : ccode; | 337 | return (ccode == 1) ? parm->ctrl.iprcode : ccode; |
338 | } | 338 | } |
339 | 339 | ||
340 | /** | 340 | /** |
341 | * iucv_query_maxconn | 341 | * iucv_query_maxconn |
342 | * | 342 | * |
343 | * Determines the maximum number of connections that may be established. | 343 | * Determines the maximum number of connections that may be established. |
344 | * | 344 | * |
345 | * Returns the maximum number of connections or -EPERM is IUCV is not | 345 | * Returns the maximum number of connections or -EPERM is IUCV is not |
346 | * available. | 346 | * available. |
347 | */ | 347 | */ |
348 | static int iucv_query_maxconn(void) | 348 | static int iucv_query_maxconn(void) |
349 | { | 349 | { |
350 | register unsigned long reg0 asm ("0"); | 350 | register unsigned long reg0 asm ("0"); |
351 | register unsigned long reg1 asm ("1"); | 351 | register unsigned long reg1 asm ("1"); |
352 | void *param; | 352 | void *param; |
353 | int ccode; | 353 | int ccode; |
354 | 354 | ||
355 | param = kzalloc(sizeof(union iucv_param), GFP_KERNEL|GFP_DMA); | 355 | param = kzalloc(sizeof(union iucv_param), GFP_KERNEL|GFP_DMA); |
356 | if (!param) | 356 | if (!param) |
357 | return -ENOMEM; | 357 | return -ENOMEM; |
358 | reg0 = IUCV_QUERY; | 358 | reg0 = IUCV_QUERY; |
359 | reg1 = (unsigned long) param; | 359 | reg1 = (unsigned long) param; |
360 | asm volatile ( | 360 | asm volatile ( |
361 | " .long 0xb2f01000\n" | 361 | " .long 0xb2f01000\n" |
362 | " ipm %0\n" | 362 | " ipm %0\n" |
363 | " srl %0,28\n" | 363 | " srl %0,28\n" |
364 | : "=d" (ccode), "+d" (reg0), "+d" (reg1) : : "cc"); | 364 | : "=d" (ccode), "+d" (reg0), "+d" (reg1) : : "cc"); |
365 | if (ccode == 0) | 365 | if (ccode == 0) |
366 | iucv_max_pathid = reg1; | 366 | iucv_max_pathid = reg1; |
367 | kfree(param); | 367 | kfree(param); |
368 | return ccode ? -EPERM : 0; | 368 | return ccode ? -EPERM : 0; |
369 | } | 369 | } |
370 | 370 | ||
371 | /** | 371 | /** |
372 | * iucv_allow_cpu | 372 | * iucv_allow_cpu |
373 | * @data: unused | 373 | * @data: unused |
374 | * | 374 | * |
375 | * Allow iucv interrupts on this cpu. | 375 | * Allow iucv interrupts on this cpu. |
376 | */ | 376 | */ |
377 | static void iucv_allow_cpu(void *data) | 377 | static void iucv_allow_cpu(void *data) |
378 | { | 378 | { |
379 | int cpu = smp_processor_id(); | 379 | int cpu = smp_processor_id(); |
380 | union iucv_param *parm; | 380 | union iucv_param *parm; |
381 | 381 | ||
382 | /* | 382 | /* |
383 | * Enable all iucv interrupts. | 383 | * Enable all iucv interrupts. |
384 | * ipmask contains bits for the different interrupts | 384 | * ipmask contains bits for the different interrupts |
385 | * 0x80 - Flag to allow nonpriority message pending interrupts | 385 | * 0x80 - Flag to allow nonpriority message pending interrupts |
386 | * 0x40 - Flag to allow priority message pending interrupts | 386 | * 0x40 - Flag to allow priority message pending interrupts |
387 | * 0x20 - Flag to allow nonpriority message completion interrupts | 387 | * 0x20 - Flag to allow nonpriority message completion interrupts |
388 | * 0x10 - Flag to allow priority message completion interrupts | 388 | * 0x10 - Flag to allow priority message completion interrupts |
389 | * 0x08 - Flag to allow IUCV control interrupts | 389 | * 0x08 - Flag to allow IUCV control interrupts |
390 | */ | 390 | */ |
391 | parm = iucv_param_irq[cpu]; | 391 | parm = iucv_param_irq[cpu]; |
392 | memset(parm, 0, sizeof(union iucv_param)); | 392 | memset(parm, 0, sizeof(union iucv_param)); |
393 | parm->set_mask.ipmask = 0xf8; | 393 | parm->set_mask.ipmask = 0xf8; |
394 | iucv_call_b2f0(IUCV_SETMASK, parm); | 394 | iucv_call_b2f0(IUCV_SETMASK, parm); |
395 | 395 | ||
396 | /* | 396 | /* |
397 | * Enable all iucv control interrupts. | 397 | * Enable all iucv control interrupts. |
398 | * ipmask contains bits for the different interrupts | 398 | * ipmask contains bits for the different interrupts |
399 | * 0x80 - Flag to allow pending connections interrupts | 399 | * 0x80 - Flag to allow pending connections interrupts |
400 | * 0x40 - Flag to allow connection complete interrupts | 400 | * 0x40 - Flag to allow connection complete interrupts |
401 | * 0x20 - Flag to allow connection severed interrupts | 401 | * 0x20 - Flag to allow connection severed interrupts |
402 | * 0x10 - Flag to allow connection quiesced interrupts | 402 | * 0x10 - Flag to allow connection quiesced interrupts |
403 | * 0x08 - Flag to allow connection resumed interrupts | 403 | * 0x08 - Flag to allow connection resumed interrupts |
404 | */ | 404 | */ |
405 | memset(parm, 0, sizeof(union iucv_param)); | 405 | memset(parm, 0, sizeof(union iucv_param)); |
406 | parm->set_mask.ipmask = 0xf8; | 406 | parm->set_mask.ipmask = 0xf8; |
407 | iucv_call_b2f0(IUCV_SETCONTROLMASK, parm); | 407 | iucv_call_b2f0(IUCV_SETCONTROLMASK, parm); |
408 | /* Set indication that iucv interrupts are allowed for this cpu. */ | 408 | /* Set indication that iucv interrupts are allowed for this cpu. */ |
409 | cpu_set(cpu, iucv_irq_cpumask); | 409 | cpu_set(cpu, iucv_irq_cpumask); |
410 | } | 410 | } |
411 | 411 | ||
412 | /** | 412 | /** |
413 | * iucv_block_cpu | 413 | * iucv_block_cpu |
414 | * @data: unused | 414 | * @data: unused |
415 | * | 415 | * |
416 | * Block iucv interrupts on this cpu. | 416 | * Block iucv interrupts on this cpu. |
417 | */ | 417 | */ |
418 | static void iucv_block_cpu(void *data) | 418 | static void iucv_block_cpu(void *data) |
419 | { | 419 | { |
420 | int cpu = smp_processor_id(); | 420 | int cpu = smp_processor_id(); |
421 | union iucv_param *parm; | 421 | union iucv_param *parm; |
422 | 422 | ||
423 | /* Disable all iucv interrupts. */ | 423 | /* Disable all iucv interrupts. */ |
424 | parm = iucv_param_irq[cpu]; | 424 | parm = iucv_param_irq[cpu]; |
425 | memset(parm, 0, sizeof(union iucv_param)); | 425 | memset(parm, 0, sizeof(union iucv_param)); |
426 | iucv_call_b2f0(IUCV_SETMASK, parm); | 426 | iucv_call_b2f0(IUCV_SETMASK, parm); |
427 | 427 | ||
428 | /* Clear indication that iucv interrupts are allowed for this cpu. */ | 428 | /* Clear indication that iucv interrupts are allowed for this cpu. */ |
429 | cpu_clear(cpu, iucv_irq_cpumask); | 429 | cpu_clear(cpu, iucv_irq_cpumask); |
430 | } | 430 | } |
431 | 431 | ||
432 | /** | 432 | /** |
433 | * iucv_block_cpu_almost | 433 | * iucv_block_cpu_almost |
434 | * @data: unused | 434 | * @data: unused |
435 | * | 435 | * |
436 | * Allow connection-severed interrupts only on this cpu. | 436 | * Allow connection-severed interrupts only on this cpu. |
437 | */ | 437 | */ |
438 | static void iucv_block_cpu_almost(void *data) | 438 | static void iucv_block_cpu_almost(void *data) |
439 | { | 439 | { |
440 | int cpu = smp_processor_id(); | 440 | int cpu = smp_processor_id(); |
441 | union iucv_param *parm; | 441 | union iucv_param *parm; |
442 | 442 | ||
443 | /* Allow iucv control interrupts only */ | 443 | /* Allow iucv control interrupts only */ |
444 | parm = iucv_param_irq[cpu]; | 444 | parm = iucv_param_irq[cpu]; |
445 | memset(parm, 0, sizeof(union iucv_param)); | 445 | memset(parm, 0, sizeof(union iucv_param)); |
446 | parm->set_mask.ipmask = 0x08; | 446 | parm->set_mask.ipmask = 0x08; |
447 | iucv_call_b2f0(IUCV_SETMASK, parm); | 447 | iucv_call_b2f0(IUCV_SETMASK, parm); |
448 | /* Allow iucv-severed interrupt only */ | 448 | /* Allow iucv-severed interrupt only */ |
449 | memset(parm, 0, sizeof(union iucv_param)); | 449 | memset(parm, 0, sizeof(union iucv_param)); |
450 | parm->set_mask.ipmask = 0x20; | 450 | parm->set_mask.ipmask = 0x20; |
451 | iucv_call_b2f0(IUCV_SETCONTROLMASK, parm); | 451 | iucv_call_b2f0(IUCV_SETCONTROLMASK, parm); |
452 | 452 | ||
453 | /* Clear indication that iucv interrupts are allowed for this cpu. */ | 453 | /* Clear indication that iucv interrupts are allowed for this cpu. */ |
454 | cpu_clear(cpu, iucv_irq_cpumask); | 454 | cpu_clear(cpu, iucv_irq_cpumask); |
455 | } | 455 | } |
456 | 456 | ||
457 | /** | 457 | /** |
458 | * iucv_declare_cpu | 458 | * iucv_declare_cpu |
459 | * @data: unused | 459 | * @data: unused |
460 | * | 460 | * |
461 | * Declare a interrupt buffer on this cpu. | 461 | * Declare a interrupt buffer on this cpu. |
462 | */ | 462 | */ |
463 | static void iucv_declare_cpu(void *data) | 463 | static void iucv_declare_cpu(void *data) |
464 | { | 464 | { |
465 | int cpu = smp_processor_id(); | 465 | int cpu = smp_processor_id(); |
466 | union iucv_param *parm; | 466 | union iucv_param *parm; |
467 | int rc; | 467 | int rc; |
468 | 468 | ||
469 | if (cpu_isset(cpu, iucv_buffer_cpumask)) | 469 | if (cpu_isset(cpu, iucv_buffer_cpumask)) |
470 | return; | 470 | return; |
471 | 471 | ||
472 | /* Declare interrupt buffer. */ | 472 | /* Declare interrupt buffer. */ |
473 | parm = iucv_param_irq[cpu]; | 473 | parm = iucv_param_irq[cpu]; |
474 | memset(parm, 0, sizeof(union iucv_param)); | 474 | memset(parm, 0, sizeof(union iucv_param)); |
475 | parm->db.ipbfadr1 = virt_to_phys(iucv_irq_data[cpu]); | 475 | parm->db.ipbfadr1 = virt_to_phys(iucv_irq_data[cpu]); |
476 | rc = iucv_call_b2f0(IUCV_DECLARE_BUFFER, parm); | 476 | rc = iucv_call_b2f0(IUCV_DECLARE_BUFFER, parm); |
477 | if (rc) { | 477 | if (rc) { |
478 | char *err = "Unknown"; | 478 | char *err = "Unknown"; |
479 | switch (rc) { | 479 | switch (rc) { |
480 | case 0x03: | 480 | case 0x03: |
481 | err = "Directory error"; | 481 | err = "Directory error"; |
482 | break; | 482 | break; |
483 | case 0x0a: | 483 | case 0x0a: |
484 | err = "Invalid length"; | 484 | err = "Invalid length"; |
485 | break; | 485 | break; |
486 | case 0x13: | 486 | case 0x13: |
487 | err = "Buffer already exists"; | 487 | err = "Buffer already exists"; |
488 | break; | 488 | break; |
489 | case 0x3e: | 489 | case 0x3e: |
490 | err = "Buffer overlap"; | 490 | err = "Buffer overlap"; |
491 | break; | 491 | break; |
492 | case 0x5c: | 492 | case 0x5c: |
493 | err = "Paging or storage error"; | 493 | err = "Paging or storage error"; |
494 | break; | 494 | break; |
495 | } | 495 | } |
496 | pr_warning("Defining an interrupt buffer on CPU %i" | 496 | pr_warning("Defining an interrupt buffer on CPU %i" |
497 | " failed with 0x%02x (%s)\n", cpu, rc, err); | 497 | " failed with 0x%02x (%s)\n", cpu, rc, err); |
498 | return; | 498 | return; |
499 | } | 499 | } |
500 | 500 | ||
501 | /* Set indication that an iucv buffer exists for this cpu. */ | 501 | /* Set indication that an iucv buffer exists for this cpu. */ |
502 | cpu_set(cpu, iucv_buffer_cpumask); | 502 | cpu_set(cpu, iucv_buffer_cpumask); |
503 | 503 | ||
504 | if (iucv_nonsmp_handler == 0 || cpus_empty(iucv_irq_cpumask)) | 504 | if (iucv_nonsmp_handler == 0 || cpus_empty(iucv_irq_cpumask)) |
505 | /* Enable iucv interrupts on this cpu. */ | 505 | /* Enable iucv interrupts on this cpu. */ |
506 | iucv_allow_cpu(NULL); | 506 | iucv_allow_cpu(NULL); |
507 | else | 507 | else |
508 | /* Disable iucv interrupts on this cpu. */ | 508 | /* Disable iucv interrupts on this cpu. */ |
509 | iucv_block_cpu(NULL); | 509 | iucv_block_cpu(NULL); |
510 | } | 510 | } |
511 | 511 | ||
512 | /** | 512 | /** |
513 | * iucv_retrieve_cpu | 513 | * iucv_retrieve_cpu |
514 | * @data: unused | 514 | * @data: unused |
515 | * | 515 | * |
516 | * Retrieve interrupt buffer on this cpu. | 516 | * Retrieve interrupt buffer on this cpu. |
517 | */ | 517 | */ |
518 | static void iucv_retrieve_cpu(void *data) | 518 | static void iucv_retrieve_cpu(void *data) |
519 | { | 519 | { |
520 | int cpu = smp_processor_id(); | 520 | int cpu = smp_processor_id(); |
521 | union iucv_param *parm; | 521 | union iucv_param *parm; |
522 | 522 | ||
523 | if (!cpu_isset(cpu, iucv_buffer_cpumask)) | 523 | if (!cpu_isset(cpu, iucv_buffer_cpumask)) |
524 | return; | 524 | return; |
525 | 525 | ||
526 | /* Block iucv interrupts. */ | 526 | /* Block iucv interrupts. */ |
527 | iucv_block_cpu(NULL); | 527 | iucv_block_cpu(NULL); |
528 | 528 | ||
529 | /* Retrieve interrupt buffer. */ | 529 | /* Retrieve interrupt buffer. */ |
530 | parm = iucv_param_irq[cpu]; | 530 | parm = iucv_param_irq[cpu]; |
531 | iucv_call_b2f0(IUCV_RETRIEVE_BUFFER, parm); | 531 | iucv_call_b2f0(IUCV_RETRIEVE_BUFFER, parm); |
532 | 532 | ||
533 | /* Clear indication that an iucv buffer exists for this cpu. */ | 533 | /* Clear indication that an iucv buffer exists for this cpu. */ |
534 | cpu_clear(cpu, iucv_buffer_cpumask); | 534 | cpu_clear(cpu, iucv_buffer_cpumask); |
535 | } | 535 | } |
536 | 536 | ||
537 | /** | 537 | /** |
538 | * iucv_setmask_smp | 538 | * iucv_setmask_smp |
539 | * | 539 | * |
540 | * Allow iucv interrupts on all cpus. | 540 | * Allow iucv interrupts on all cpus. |
541 | */ | 541 | */ |
542 | static void iucv_setmask_mp(void) | 542 | static void iucv_setmask_mp(void) |
543 | { | 543 | { |
544 | int cpu; | 544 | int cpu; |
545 | 545 | ||
546 | get_online_cpus(); | 546 | get_online_cpus(); |
547 | for_each_online_cpu(cpu) | 547 | for_each_online_cpu(cpu) |
548 | /* Enable all cpus with a declared buffer. */ | 548 | /* Enable all cpus with a declared buffer. */ |
549 | if (cpu_isset(cpu, iucv_buffer_cpumask) && | 549 | if (cpu_isset(cpu, iucv_buffer_cpumask) && |
550 | !cpu_isset(cpu, iucv_irq_cpumask)) | 550 | !cpu_isset(cpu, iucv_irq_cpumask)) |
551 | smp_call_function_single(cpu, iucv_allow_cpu, | 551 | smp_call_function_single(cpu, iucv_allow_cpu, |
552 | NULL, 1); | 552 | NULL, 1); |
553 | put_online_cpus(); | 553 | put_online_cpus(); |
554 | } | 554 | } |
555 | 555 | ||
556 | /** | 556 | /** |
557 | * iucv_setmask_up | 557 | * iucv_setmask_up |
558 | * | 558 | * |
559 | * Allow iucv interrupts on a single cpu. | 559 | * Allow iucv interrupts on a single cpu. |
560 | */ | 560 | */ |
561 | static void iucv_setmask_up(void) | 561 | static void iucv_setmask_up(void) |
562 | { | 562 | { |
563 | cpumask_t cpumask; | 563 | cpumask_t cpumask; |
564 | int cpu; | 564 | int cpu; |
565 | 565 | ||
566 | /* Disable all cpu but the first in cpu_irq_cpumask. */ | 566 | /* Disable all cpu but the first in cpu_irq_cpumask. */ |
567 | cpumask = iucv_irq_cpumask; | 567 | cpumask = iucv_irq_cpumask; |
568 | cpu_clear(first_cpu(iucv_irq_cpumask), cpumask); | 568 | cpu_clear(first_cpu(iucv_irq_cpumask), cpumask); |
569 | for_each_cpu_mask_nr(cpu, cpumask) | 569 | for_each_cpu_mask_nr(cpu, cpumask) |
570 | smp_call_function_single(cpu, iucv_block_cpu, NULL, 1); | 570 | smp_call_function_single(cpu, iucv_block_cpu, NULL, 1); |
571 | } | 571 | } |
572 | 572 | ||
573 | /** | 573 | /** |
574 | * iucv_enable | 574 | * iucv_enable |
575 | * | 575 | * |
576 | * This function makes iucv ready for use. It allocates the pathid | 576 | * This function makes iucv ready for use. It allocates the pathid |
577 | * table, declares an iucv interrupt buffer and enables the iucv | 577 | * table, declares an iucv interrupt buffer and enables the iucv |
578 | * interrupts. Called when the first user has registered an iucv | 578 | * interrupts. Called when the first user has registered an iucv |
579 | * handler. | 579 | * handler. |
580 | */ | 580 | */ |
581 | static int iucv_enable(void) | 581 | static int iucv_enable(void) |
582 | { | 582 | { |
583 | size_t alloc_size; | 583 | size_t alloc_size; |
584 | int cpu, rc; | 584 | int cpu, rc; |
585 | 585 | ||
586 | get_online_cpus(); | 586 | get_online_cpus(); |
587 | rc = -ENOMEM; | 587 | rc = -ENOMEM; |
588 | alloc_size = iucv_max_pathid * sizeof(struct iucv_path); | 588 | alloc_size = iucv_max_pathid * sizeof(struct iucv_path); |
589 | iucv_path_table = kzalloc(alloc_size, GFP_KERNEL); | 589 | iucv_path_table = kzalloc(alloc_size, GFP_KERNEL); |
590 | if (!iucv_path_table) | 590 | if (!iucv_path_table) |
591 | goto out; | 591 | goto out; |
592 | /* Declare per cpu buffers. */ | 592 | /* Declare per cpu buffers. */ |
593 | rc = -EIO; | 593 | rc = -EIO; |
594 | for_each_online_cpu(cpu) | 594 | for_each_online_cpu(cpu) |
595 | smp_call_function_single(cpu, iucv_declare_cpu, NULL, 1); | 595 | smp_call_function_single(cpu, iucv_declare_cpu, NULL, 1); |
596 | if (cpus_empty(iucv_buffer_cpumask)) | 596 | if (cpus_empty(iucv_buffer_cpumask)) |
597 | /* No cpu could declare an iucv buffer. */ | 597 | /* No cpu could declare an iucv buffer. */ |
598 | goto out; | 598 | goto out; |
599 | put_online_cpus(); | 599 | put_online_cpus(); |
600 | return 0; | 600 | return 0; |
601 | out: | 601 | out: |
602 | kfree(iucv_path_table); | 602 | kfree(iucv_path_table); |
603 | iucv_path_table = NULL; | 603 | iucv_path_table = NULL; |
604 | put_online_cpus(); | 604 | put_online_cpus(); |
605 | return rc; | 605 | return rc; |
606 | } | 606 | } |
607 | 607 | ||
608 | /** | 608 | /** |
609 | * iucv_disable | 609 | * iucv_disable |
610 | * | 610 | * |
611 | * This function shuts down iucv. It disables iucv interrupts, retrieves | 611 | * This function shuts down iucv. It disables iucv interrupts, retrieves |
612 | * the iucv interrupt buffer and frees the pathid table. Called after the | 612 | * the iucv interrupt buffer and frees the pathid table. Called after the |
613 | * last user unregister its iucv handler. | 613 | * last user unregister its iucv handler. |
614 | */ | 614 | */ |
615 | static void iucv_disable(void) | 615 | static void iucv_disable(void) |
616 | { | 616 | { |
617 | get_online_cpus(); | 617 | get_online_cpus(); |
618 | on_each_cpu(iucv_retrieve_cpu, NULL, 1); | 618 | on_each_cpu(iucv_retrieve_cpu, NULL, 1); |
619 | kfree(iucv_path_table); | 619 | kfree(iucv_path_table); |
620 | iucv_path_table = NULL; | 620 | iucv_path_table = NULL; |
621 | put_online_cpus(); | 621 | put_online_cpus(); |
622 | } | 622 | } |
623 | 623 | ||
624 | static int __cpuinit iucv_cpu_notify(struct notifier_block *self, | 624 | static int __cpuinit iucv_cpu_notify(struct notifier_block *self, |
625 | unsigned long action, void *hcpu) | 625 | unsigned long action, void *hcpu) |
626 | { | 626 | { |
627 | cpumask_t cpumask; | 627 | cpumask_t cpumask; |
628 | long cpu = (long) hcpu; | 628 | long cpu = (long) hcpu; |
629 | 629 | ||
630 | switch (action) { | 630 | switch (action) { |
631 | case CPU_UP_PREPARE: | 631 | case CPU_UP_PREPARE: |
632 | case CPU_UP_PREPARE_FROZEN: | 632 | case CPU_UP_PREPARE_FROZEN: |
633 | iucv_irq_data[cpu] = kmalloc_node(sizeof(struct iucv_irq_data), | 633 | iucv_irq_data[cpu] = kmalloc_node(sizeof(struct iucv_irq_data), |
634 | GFP_KERNEL|GFP_DMA, cpu_to_node(cpu)); | 634 | GFP_KERNEL|GFP_DMA, cpu_to_node(cpu)); |
635 | if (!iucv_irq_data[cpu]) | 635 | if (!iucv_irq_data[cpu]) |
636 | return notifier_from_errno(-ENOMEM); | 636 | return notifier_from_errno(-ENOMEM); |
637 | 637 | ||
638 | iucv_param[cpu] = kmalloc_node(sizeof(union iucv_param), | 638 | iucv_param[cpu] = kmalloc_node(sizeof(union iucv_param), |
639 | GFP_KERNEL|GFP_DMA, cpu_to_node(cpu)); | 639 | GFP_KERNEL|GFP_DMA, cpu_to_node(cpu)); |
640 | if (!iucv_param[cpu]) { | 640 | if (!iucv_param[cpu]) { |
641 | kfree(iucv_irq_data[cpu]); | 641 | kfree(iucv_irq_data[cpu]); |
642 | iucv_irq_data[cpu] = NULL; | 642 | iucv_irq_data[cpu] = NULL; |
643 | return notifier_from_errno(-ENOMEM); | 643 | return notifier_from_errno(-ENOMEM); |
644 | } | 644 | } |
645 | iucv_param_irq[cpu] = kmalloc_node(sizeof(union iucv_param), | 645 | iucv_param_irq[cpu] = kmalloc_node(sizeof(union iucv_param), |
646 | GFP_KERNEL|GFP_DMA, cpu_to_node(cpu)); | 646 | GFP_KERNEL|GFP_DMA, cpu_to_node(cpu)); |
647 | if (!iucv_param_irq[cpu]) { | 647 | if (!iucv_param_irq[cpu]) { |
648 | kfree(iucv_param[cpu]); | 648 | kfree(iucv_param[cpu]); |
649 | iucv_param[cpu] = NULL; | 649 | iucv_param[cpu] = NULL; |
650 | kfree(iucv_irq_data[cpu]); | 650 | kfree(iucv_irq_data[cpu]); |
651 | iucv_irq_data[cpu] = NULL; | 651 | iucv_irq_data[cpu] = NULL; |
652 | return notifier_from_errno(-ENOMEM); | 652 | return notifier_from_errno(-ENOMEM); |
653 | } | 653 | } |
654 | break; | 654 | break; |
655 | case CPU_UP_CANCELED: | 655 | case CPU_UP_CANCELED: |
656 | case CPU_UP_CANCELED_FROZEN: | 656 | case CPU_UP_CANCELED_FROZEN: |
657 | case CPU_DEAD: | 657 | case CPU_DEAD: |
658 | case CPU_DEAD_FROZEN: | 658 | case CPU_DEAD_FROZEN: |
659 | kfree(iucv_param_irq[cpu]); | 659 | kfree(iucv_param_irq[cpu]); |
660 | iucv_param_irq[cpu] = NULL; | 660 | iucv_param_irq[cpu] = NULL; |
661 | kfree(iucv_param[cpu]); | 661 | kfree(iucv_param[cpu]); |
662 | iucv_param[cpu] = NULL; | 662 | iucv_param[cpu] = NULL; |
663 | kfree(iucv_irq_data[cpu]); | 663 | kfree(iucv_irq_data[cpu]); |
664 | iucv_irq_data[cpu] = NULL; | 664 | iucv_irq_data[cpu] = NULL; |
665 | break; | 665 | break; |
666 | case CPU_ONLINE: | 666 | case CPU_ONLINE: |
667 | case CPU_ONLINE_FROZEN: | 667 | case CPU_ONLINE_FROZEN: |
668 | case CPU_DOWN_FAILED: | 668 | case CPU_DOWN_FAILED: |
669 | case CPU_DOWN_FAILED_FROZEN: | 669 | case CPU_DOWN_FAILED_FROZEN: |
670 | if (!iucv_path_table) | 670 | if (!iucv_path_table) |
671 | break; | 671 | break; |
672 | smp_call_function_single(cpu, iucv_declare_cpu, NULL, 1); | 672 | smp_call_function_single(cpu, iucv_declare_cpu, NULL, 1); |
673 | break; | 673 | break; |
674 | case CPU_DOWN_PREPARE: | 674 | case CPU_DOWN_PREPARE: |
675 | case CPU_DOWN_PREPARE_FROZEN: | 675 | case CPU_DOWN_PREPARE_FROZEN: |
676 | if (!iucv_path_table) | 676 | if (!iucv_path_table) |
677 | break; | 677 | break; |
678 | cpumask = iucv_buffer_cpumask; | 678 | cpumask = iucv_buffer_cpumask; |
679 | cpu_clear(cpu, cpumask); | 679 | cpu_clear(cpu, cpumask); |
680 | if (cpus_empty(cpumask)) | 680 | if (cpus_empty(cpumask)) |
681 | /* Can't offline last IUCV enabled cpu. */ | 681 | /* Can't offline last IUCV enabled cpu. */ |
682 | return notifier_from_errno(-EINVAL); | 682 | return notifier_from_errno(-EINVAL); |
683 | smp_call_function_single(cpu, iucv_retrieve_cpu, NULL, 1); | 683 | smp_call_function_single(cpu, iucv_retrieve_cpu, NULL, 1); |
684 | if (cpus_empty(iucv_irq_cpumask)) | 684 | if (cpus_empty(iucv_irq_cpumask)) |
685 | smp_call_function_single(first_cpu(iucv_buffer_cpumask), | 685 | smp_call_function_single(first_cpu(iucv_buffer_cpumask), |
686 | iucv_allow_cpu, NULL, 1); | 686 | iucv_allow_cpu, NULL, 1); |
687 | break; | 687 | break; |
688 | } | 688 | } |
689 | return NOTIFY_OK; | 689 | return NOTIFY_OK; |
690 | } | 690 | } |
691 | 691 | ||
692 | static struct notifier_block __refdata iucv_cpu_notifier = { | 692 | static struct notifier_block __refdata iucv_cpu_notifier = { |
693 | .notifier_call = iucv_cpu_notify, | 693 | .notifier_call = iucv_cpu_notify, |
694 | }; | 694 | }; |
695 | 695 | ||
696 | /** | 696 | /** |
697 | * iucv_sever_pathid | 697 | * iucv_sever_pathid |
698 | * @pathid: path identification number. | 698 | * @pathid: path identification number. |
699 | * @userdata: 16-bytes of user data. | 699 | * @userdata: 16-bytes of user data. |
700 | * | 700 | * |
701 | * Sever an iucv path to free up the pathid. Used internally. | 701 | * Sever an iucv path to free up the pathid. Used internally. |
702 | */ | 702 | */ |
703 | static int iucv_sever_pathid(u16 pathid, u8 userdata[16]) | 703 | static int iucv_sever_pathid(u16 pathid, u8 userdata[16]) |
704 | { | 704 | { |
705 | union iucv_param *parm; | 705 | union iucv_param *parm; |
706 | 706 | ||
707 | parm = iucv_param_irq[smp_processor_id()]; | 707 | parm = iucv_param_irq[smp_processor_id()]; |
708 | memset(parm, 0, sizeof(union iucv_param)); | 708 | memset(parm, 0, sizeof(union iucv_param)); |
709 | if (userdata) | 709 | if (userdata) |
710 | memcpy(parm->ctrl.ipuser, userdata, sizeof(parm->ctrl.ipuser)); | 710 | memcpy(parm->ctrl.ipuser, userdata, sizeof(parm->ctrl.ipuser)); |
711 | parm->ctrl.ippathid = pathid; | 711 | parm->ctrl.ippathid = pathid; |
712 | return iucv_call_b2f0(IUCV_SEVER, parm); | 712 | return iucv_call_b2f0(IUCV_SEVER, parm); |
713 | } | 713 | } |
714 | 714 | ||
715 | /** | 715 | /** |
716 | * __iucv_cleanup_queue | 716 | * __iucv_cleanup_queue |
717 | * @dummy: unused dummy argument | 717 | * @dummy: unused dummy argument |
718 | * | 718 | * |
719 | * Nop function called via smp_call_function to force work items from | 719 | * Nop function called via smp_call_function to force work items from |
720 | * pending external iucv interrupts to the work queue. | 720 | * pending external iucv interrupts to the work queue. |
721 | */ | 721 | */ |
722 | static void __iucv_cleanup_queue(void *dummy) | 722 | static void __iucv_cleanup_queue(void *dummy) |
723 | { | 723 | { |
724 | } | 724 | } |
725 | 725 | ||
726 | /** | 726 | /** |
727 | * iucv_cleanup_queue | 727 | * iucv_cleanup_queue |
728 | * | 728 | * |
729 | * Function called after a path has been severed to find all remaining | 729 | * Function called after a path has been severed to find all remaining |
730 | * work items for the now stale pathid. The caller needs to hold the | 730 | * work items for the now stale pathid. The caller needs to hold the |
731 | * iucv_table_lock. | 731 | * iucv_table_lock. |
732 | */ | 732 | */ |
733 | static void iucv_cleanup_queue(void) | 733 | static void iucv_cleanup_queue(void) |
734 | { | 734 | { |
735 | struct iucv_irq_list *p, *n; | 735 | struct iucv_irq_list *p, *n; |
736 | 736 | ||
737 | /* | 737 | /* |
738 | * When a path is severed, the pathid can be reused immediately | 738 | * When a path is severed, the pathid can be reused immediately |
739 | * on a iucv connect or a connection pending interrupt. Remove | 739 | * on a iucv connect or a connection pending interrupt. Remove |
740 | * all entries from the task queue that refer to a stale pathid | 740 | * all entries from the task queue that refer to a stale pathid |
741 | * (iucv_path_table[ix] == NULL). Only then do the iucv connect | 741 | * (iucv_path_table[ix] == NULL). Only then do the iucv connect |
742 | * or deliver the connection pending interrupt. To get all the | 742 | * or deliver the connection pending interrupt. To get all the |
743 | * pending interrupts force them to the work queue by calling | 743 | * pending interrupts force them to the work queue by calling |
744 | * an empty function on all cpus. | 744 | * an empty function on all cpus. |
745 | */ | 745 | */ |
746 | smp_call_function(__iucv_cleanup_queue, NULL, 1); | 746 | smp_call_function(__iucv_cleanup_queue, NULL, 1); |
747 | spin_lock_irq(&iucv_queue_lock); | 747 | spin_lock_irq(&iucv_queue_lock); |
748 | list_for_each_entry_safe(p, n, &iucv_task_queue, list) { | 748 | list_for_each_entry_safe(p, n, &iucv_task_queue, list) { |
749 | /* Remove stale work items from the task queue. */ | 749 | /* Remove stale work items from the task queue. */ |
750 | if (iucv_path_table[p->data.ippathid] == NULL) { | 750 | if (iucv_path_table[p->data.ippathid] == NULL) { |
751 | list_del(&p->list); | 751 | list_del(&p->list); |
752 | kfree(p); | 752 | kfree(p); |
753 | } | 753 | } |
754 | } | 754 | } |
755 | spin_unlock_irq(&iucv_queue_lock); | 755 | spin_unlock_irq(&iucv_queue_lock); |
756 | } | 756 | } |
757 | 757 | ||
758 | /** | 758 | /** |
759 | * iucv_register: | 759 | * iucv_register: |
760 | * @handler: address of iucv handler structure | 760 | * @handler: address of iucv handler structure |
761 | * @smp: != 0 indicates that the handler can deal with out of order messages | 761 | * @smp: != 0 indicates that the handler can deal with out of order messages |
762 | * | 762 | * |
763 | * Registers a driver with IUCV. | 763 | * Registers a driver with IUCV. |
764 | * | 764 | * |
765 | * Returns 0 on success, -ENOMEM if the memory allocation for the pathid | 765 | * Returns 0 on success, -ENOMEM if the memory allocation for the pathid |
766 | * table failed, or -EIO if IUCV_DECLARE_BUFFER failed on all cpus. | 766 | * table failed, or -EIO if IUCV_DECLARE_BUFFER failed on all cpus. |
767 | */ | 767 | */ |
768 | int iucv_register(struct iucv_handler *handler, int smp) | 768 | int iucv_register(struct iucv_handler *handler, int smp) |
769 | { | 769 | { |
770 | int rc; | 770 | int rc; |
771 | 771 | ||
772 | if (!iucv_available) | 772 | if (!iucv_available) |
773 | return -ENOSYS; | 773 | return -ENOSYS; |
774 | mutex_lock(&iucv_register_mutex); | 774 | mutex_lock(&iucv_register_mutex); |
775 | if (!smp) | 775 | if (!smp) |
776 | iucv_nonsmp_handler++; | 776 | iucv_nonsmp_handler++; |
777 | if (list_empty(&iucv_handler_list)) { | 777 | if (list_empty(&iucv_handler_list)) { |
778 | rc = iucv_enable(); | 778 | rc = iucv_enable(); |
779 | if (rc) | 779 | if (rc) |
780 | goto out_mutex; | 780 | goto out_mutex; |
781 | } else if (!smp && iucv_nonsmp_handler == 1) | 781 | } else if (!smp && iucv_nonsmp_handler == 1) |
782 | iucv_setmask_up(); | 782 | iucv_setmask_up(); |
783 | INIT_LIST_HEAD(&handler->paths); | 783 | INIT_LIST_HEAD(&handler->paths); |
784 | 784 | ||
785 | spin_lock_bh(&iucv_table_lock); | 785 | spin_lock_bh(&iucv_table_lock); |
786 | list_add_tail(&handler->list, &iucv_handler_list); | 786 | list_add_tail(&handler->list, &iucv_handler_list); |
787 | spin_unlock_bh(&iucv_table_lock); | 787 | spin_unlock_bh(&iucv_table_lock); |
788 | rc = 0; | 788 | rc = 0; |
789 | out_mutex: | 789 | out_mutex: |
790 | mutex_unlock(&iucv_register_mutex); | 790 | mutex_unlock(&iucv_register_mutex); |
791 | return rc; | 791 | return rc; |
792 | } | 792 | } |
793 | EXPORT_SYMBOL(iucv_register); | 793 | EXPORT_SYMBOL(iucv_register); |
794 | 794 | ||
795 | /** | 795 | /** |
796 | * iucv_unregister | 796 | * iucv_unregister |
797 | * @handler: address of iucv handler structure | 797 | * @handler: address of iucv handler structure |
798 | * @smp: != 0 indicates that the handler can deal with out of order messages | 798 | * @smp: != 0 indicates that the handler can deal with out of order messages |
799 | * | 799 | * |
800 | * Unregister driver from IUCV. | 800 | * Unregister driver from IUCV. |
801 | */ | 801 | */ |
802 | void iucv_unregister(struct iucv_handler *handler, int smp) | 802 | void iucv_unregister(struct iucv_handler *handler, int smp) |
803 | { | 803 | { |
804 | struct iucv_path *p, *n; | 804 | struct iucv_path *p, *n; |
805 | 805 | ||
806 | mutex_lock(&iucv_register_mutex); | 806 | mutex_lock(&iucv_register_mutex); |
807 | spin_lock_bh(&iucv_table_lock); | 807 | spin_lock_bh(&iucv_table_lock); |
808 | /* Remove handler from the iucv_handler_list. */ | 808 | /* Remove handler from the iucv_handler_list. */ |
809 | list_del_init(&handler->list); | 809 | list_del_init(&handler->list); |
810 | /* Sever all pathids still referring to the handler. */ | 810 | /* Sever all pathids still referring to the handler. */ |
811 | list_for_each_entry_safe(p, n, &handler->paths, list) { | 811 | list_for_each_entry_safe(p, n, &handler->paths, list) { |
812 | iucv_sever_pathid(p->pathid, NULL); | 812 | iucv_sever_pathid(p->pathid, NULL); |
813 | iucv_path_table[p->pathid] = NULL; | 813 | iucv_path_table[p->pathid] = NULL; |
814 | list_del(&p->list); | 814 | list_del(&p->list); |
815 | iucv_path_free(p); | 815 | iucv_path_free(p); |
816 | } | 816 | } |
817 | spin_unlock_bh(&iucv_table_lock); | 817 | spin_unlock_bh(&iucv_table_lock); |
818 | if (!smp) | 818 | if (!smp) |
819 | iucv_nonsmp_handler--; | 819 | iucv_nonsmp_handler--; |
820 | if (list_empty(&iucv_handler_list)) | 820 | if (list_empty(&iucv_handler_list)) |
821 | iucv_disable(); | 821 | iucv_disable(); |
822 | else if (!smp && iucv_nonsmp_handler == 0) | 822 | else if (!smp && iucv_nonsmp_handler == 0) |
823 | iucv_setmask_mp(); | 823 | iucv_setmask_mp(); |
824 | mutex_unlock(&iucv_register_mutex); | 824 | mutex_unlock(&iucv_register_mutex); |
825 | } | 825 | } |
826 | EXPORT_SYMBOL(iucv_unregister); | 826 | EXPORT_SYMBOL(iucv_unregister); |
827 | 827 | ||
828 | static int iucv_reboot_event(struct notifier_block *this, | 828 | static int iucv_reboot_event(struct notifier_block *this, |
829 | unsigned long event, void *ptr) | 829 | unsigned long event, void *ptr) |
830 | { | 830 | { |
831 | int i, rc; | 831 | int i; |
832 | 832 | ||
833 | get_online_cpus(); | 833 | get_online_cpus(); |
834 | on_each_cpu(iucv_block_cpu, NULL, 1); | 834 | on_each_cpu(iucv_block_cpu, NULL, 1); |
835 | preempt_disable(); | 835 | preempt_disable(); |
836 | for (i = 0; i < iucv_max_pathid; i++) { | 836 | for (i = 0; i < iucv_max_pathid; i++) { |
837 | if (iucv_path_table[i]) | 837 | if (iucv_path_table[i]) |
838 | rc = iucv_sever_pathid(i, NULL); | 838 | iucv_sever_pathid(i, NULL); |
839 | } | 839 | } |
840 | preempt_enable(); | 840 | preempt_enable(); |
841 | put_online_cpus(); | 841 | put_online_cpus(); |
842 | iucv_disable(); | 842 | iucv_disable(); |
843 | return NOTIFY_DONE; | 843 | return NOTIFY_DONE; |
844 | } | 844 | } |
845 | 845 | ||
846 | static struct notifier_block iucv_reboot_notifier = { | 846 | static struct notifier_block iucv_reboot_notifier = { |
847 | .notifier_call = iucv_reboot_event, | 847 | .notifier_call = iucv_reboot_event, |
848 | }; | 848 | }; |
849 | 849 | ||
850 | /** | 850 | /** |
851 | * iucv_path_accept | 851 | * iucv_path_accept |
852 | * @path: address of iucv path structure | 852 | * @path: address of iucv path structure |
853 | * @handler: address of iucv handler structure | 853 | * @handler: address of iucv handler structure |
854 | * @userdata: 16 bytes of data reflected to the communication partner | 854 | * @userdata: 16 bytes of data reflected to the communication partner |
855 | * @private: private data passed to interrupt handlers for this path | 855 | * @private: private data passed to interrupt handlers for this path |
856 | * | 856 | * |
857 | * This function is issued after the user received a connection pending | 857 | * This function is issued after the user received a connection pending |
858 | * external interrupt and now wishes to complete the IUCV communication path. | 858 | * external interrupt and now wishes to complete the IUCV communication path. |
859 | * | 859 | * |
860 | * Returns the result of the CP IUCV call. | 860 | * Returns the result of the CP IUCV call. |
861 | */ | 861 | */ |
862 | int iucv_path_accept(struct iucv_path *path, struct iucv_handler *handler, | 862 | int iucv_path_accept(struct iucv_path *path, struct iucv_handler *handler, |
863 | u8 userdata[16], void *private) | 863 | u8 userdata[16], void *private) |
864 | { | 864 | { |
865 | union iucv_param *parm; | 865 | union iucv_param *parm; |
866 | int rc; | 866 | int rc; |
867 | 867 | ||
868 | local_bh_disable(); | 868 | local_bh_disable(); |
869 | if (cpus_empty(iucv_buffer_cpumask)) { | 869 | if (cpus_empty(iucv_buffer_cpumask)) { |
870 | rc = -EIO; | 870 | rc = -EIO; |
871 | goto out; | 871 | goto out; |
872 | } | 872 | } |
873 | /* Prepare parameter block. */ | 873 | /* Prepare parameter block. */ |
874 | parm = iucv_param[smp_processor_id()]; | 874 | parm = iucv_param[smp_processor_id()]; |
875 | memset(parm, 0, sizeof(union iucv_param)); | 875 | memset(parm, 0, sizeof(union iucv_param)); |
876 | parm->ctrl.ippathid = path->pathid; | 876 | parm->ctrl.ippathid = path->pathid; |
877 | parm->ctrl.ipmsglim = path->msglim; | 877 | parm->ctrl.ipmsglim = path->msglim; |
878 | if (userdata) | 878 | if (userdata) |
879 | memcpy(parm->ctrl.ipuser, userdata, sizeof(parm->ctrl.ipuser)); | 879 | memcpy(parm->ctrl.ipuser, userdata, sizeof(parm->ctrl.ipuser)); |
880 | parm->ctrl.ipflags1 = path->flags; | 880 | parm->ctrl.ipflags1 = path->flags; |
881 | 881 | ||
882 | rc = iucv_call_b2f0(IUCV_ACCEPT, parm); | 882 | rc = iucv_call_b2f0(IUCV_ACCEPT, parm); |
883 | if (!rc) { | 883 | if (!rc) { |
884 | path->private = private; | 884 | path->private = private; |
885 | path->msglim = parm->ctrl.ipmsglim; | 885 | path->msglim = parm->ctrl.ipmsglim; |
886 | path->flags = parm->ctrl.ipflags1; | 886 | path->flags = parm->ctrl.ipflags1; |
887 | } | 887 | } |
888 | out: | 888 | out: |
889 | local_bh_enable(); | 889 | local_bh_enable(); |
890 | return rc; | 890 | return rc; |
891 | } | 891 | } |
892 | EXPORT_SYMBOL(iucv_path_accept); | 892 | EXPORT_SYMBOL(iucv_path_accept); |
893 | 893 | ||
894 | /** | 894 | /** |
895 | * iucv_path_connect | 895 | * iucv_path_connect |
896 | * @path: address of iucv path structure | 896 | * @path: address of iucv path structure |
897 | * @handler: address of iucv handler structure | 897 | * @handler: address of iucv handler structure |
898 | * @userid: 8-byte user identification | 898 | * @userid: 8-byte user identification |
899 | * @system: 8-byte target system identification | 899 | * @system: 8-byte target system identification |
900 | * @userdata: 16 bytes of data reflected to the communication partner | 900 | * @userdata: 16 bytes of data reflected to the communication partner |
901 | * @private: private data passed to interrupt handlers for this path | 901 | * @private: private data passed to interrupt handlers for this path |
902 | * | 902 | * |
903 | * This function establishes an IUCV path. Although the connect may complete | 903 | * This function establishes an IUCV path. Although the connect may complete |
904 | * successfully, you are not able to use the path until you receive an IUCV | 904 | * successfully, you are not able to use the path until you receive an IUCV |
905 | * Connection Complete external interrupt. | 905 | * Connection Complete external interrupt. |
906 | * | 906 | * |
907 | * Returns the result of the CP IUCV call. | 907 | * Returns the result of the CP IUCV call. |
908 | */ | 908 | */ |
909 | int iucv_path_connect(struct iucv_path *path, struct iucv_handler *handler, | 909 | int iucv_path_connect(struct iucv_path *path, struct iucv_handler *handler, |
910 | u8 userid[8], u8 system[8], u8 userdata[16], | 910 | u8 userid[8], u8 system[8], u8 userdata[16], |
911 | void *private) | 911 | void *private) |
912 | { | 912 | { |
913 | union iucv_param *parm; | 913 | union iucv_param *parm; |
914 | int rc; | 914 | int rc; |
915 | 915 | ||
916 | spin_lock_bh(&iucv_table_lock); | 916 | spin_lock_bh(&iucv_table_lock); |
917 | iucv_cleanup_queue(); | 917 | iucv_cleanup_queue(); |
918 | if (cpus_empty(iucv_buffer_cpumask)) { | 918 | if (cpus_empty(iucv_buffer_cpumask)) { |
919 | rc = -EIO; | 919 | rc = -EIO; |
920 | goto out; | 920 | goto out; |
921 | } | 921 | } |
922 | parm = iucv_param[smp_processor_id()]; | 922 | parm = iucv_param[smp_processor_id()]; |
923 | memset(parm, 0, sizeof(union iucv_param)); | 923 | memset(parm, 0, sizeof(union iucv_param)); |
924 | parm->ctrl.ipmsglim = path->msglim; | 924 | parm->ctrl.ipmsglim = path->msglim; |
925 | parm->ctrl.ipflags1 = path->flags; | 925 | parm->ctrl.ipflags1 = path->flags; |
926 | if (userid) { | 926 | if (userid) { |
927 | memcpy(parm->ctrl.ipvmid, userid, sizeof(parm->ctrl.ipvmid)); | 927 | memcpy(parm->ctrl.ipvmid, userid, sizeof(parm->ctrl.ipvmid)); |
928 | ASCEBC(parm->ctrl.ipvmid, sizeof(parm->ctrl.ipvmid)); | 928 | ASCEBC(parm->ctrl.ipvmid, sizeof(parm->ctrl.ipvmid)); |
929 | EBC_TOUPPER(parm->ctrl.ipvmid, sizeof(parm->ctrl.ipvmid)); | 929 | EBC_TOUPPER(parm->ctrl.ipvmid, sizeof(parm->ctrl.ipvmid)); |
930 | } | 930 | } |
931 | if (system) { | 931 | if (system) { |
932 | memcpy(parm->ctrl.iptarget, system, | 932 | memcpy(parm->ctrl.iptarget, system, |
933 | sizeof(parm->ctrl.iptarget)); | 933 | sizeof(parm->ctrl.iptarget)); |
934 | ASCEBC(parm->ctrl.iptarget, sizeof(parm->ctrl.iptarget)); | 934 | ASCEBC(parm->ctrl.iptarget, sizeof(parm->ctrl.iptarget)); |
935 | EBC_TOUPPER(parm->ctrl.iptarget, sizeof(parm->ctrl.iptarget)); | 935 | EBC_TOUPPER(parm->ctrl.iptarget, sizeof(parm->ctrl.iptarget)); |
936 | } | 936 | } |
937 | if (userdata) | 937 | if (userdata) |
938 | memcpy(parm->ctrl.ipuser, userdata, sizeof(parm->ctrl.ipuser)); | 938 | memcpy(parm->ctrl.ipuser, userdata, sizeof(parm->ctrl.ipuser)); |
939 | 939 | ||
940 | rc = iucv_call_b2f0(IUCV_CONNECT, parm); | 940 | rc = iucv_call_b2f0(IUCV_CONNECT, parm); |
941 | if (!rc) { | 941 | if (!rc) { |
942 | if (parm->ctrl.ippathid < iucv_max_pathid) { | 942 | if (parm->ctrl.ippathid < iucv_max_pathid) { |
943 | path->pathid = parm->ctrl.ippathid; | 943 | path->pathid = parm->ctrl.ippathid; |
944 | path->msglim = parm->ctrl.ipmsglim; | 944 | path->msglim = parm->ctrl.ipmsglim; |
945 | path->flags = parm->ctrl.ipflags1; | 945 | path->flags = parm->ctrl.ipflags1; |
946 | path->handler = handler; | 946 | path->handler = handler; |
947 | path->private = private; | 947 | path->private = private; |
948 | list_add_tail(&path->list, &handler->paths); | 948 | list_add_tail(&path->list, &handler->paths); |
949 | iucv_path_table[path->pathid] = path; | 949 | iucv_path_table[path->pathid] = path; |
950 | } else { | 950 | } else { |
951 | iucv_sever_pathid(parm->ctrl.ippathid, | 951 | iucv_sever_pathid(parm->ctrl.ippathid, |
952 | iucv_error_pathid); | 952 | iucv_error_pathid); |
953 | rc = -EIO; | 953 | rc = -EIO; |
954 | } | 954 | } |
955 | } | 955 | } |
956 | out: | 956 | out: |
957 | spin_unlock_bh(&iucv_table_lock); | 957 | spin_unlock_bh(&iucv_table_lock); |
958 | return rc; | 958 | return rc; |
959 | } | 959 | } |
960 | EXPORT_SYMBOL(iucv_path_connect); | 960 | EXPORT_SYMBOL(iucv_path_connect); |
961 | 961 | ||
962 | /** | 962 | /** |
963 | * iucv_path_quiesce: | 963 | * iucv_path_quiesce: |
964 | * @path: address of iucv path structure | 964 | * @path: address of iucv path structure |
965 | * @userdata: 16 bytes of data reflected to the communication partner | 965 | * @userdata: 16 bytes of data reflected to the communication partner |
966 | * | 966 | * |
967 | * This function temporarily suspends incoming messages on an IUCV path. | 967 | * This function temporarily suspends incoming messages on an IUCV path. |
968 | * You can later reactivate the path by invoking the iucv_resume function. | 968 | * You can later reactivate the path by invoking the iucv_resume function. |
969 | * | 969 | * |
970 | * Returns the result from the CP IUCV call. | 970 | * Returns the result from the CP IUCV call. |
971 | */ | 971 | */ |
972 | int iucv_path_quiesce(struct iucv_path *path, u8 userdata[16]) | 972 | int iucv_path_quiesce(struct iucv_path *path, u8 userdata[16]) |
973 | { | 973 | { |
974 | union iucv_param *parm; | 974 | union iucv_param *parm; |
975 | int rc; | 975 | int rc; |
976 | 976 | ||
977 | local_bh_disable(); | 977 | local_bh_disable(); |
978 | if (cpus_empty(iucv_buffer_cpumask)) { | 978 | if (cpus_empty(iucv_buffer_cpumask)) { |
979 | rc = -EIO; | 979 | rc = -EIO; |
980 | goto out; | 980 | goto out; |
981 | } | 981 | } |
982 | parm = iucv_param[smp_processor_id()]; | 982 | parm = iucv_param[smp_processor_id()]; |
983 | memset(parm, 0, sizeof(union iucv_param)); | 983 | memset(parm, 0, sizeof(union iucv_param)); |
984 | if (userdata) | 984 | if (userdata) |
985 | memcpy(parm->ctrl.ipuser, userdata, sizeof(parm->ctrl.ipuser)); | 985 | memcpy(parm->ctrl.ipuser, userdata, sizeof(parm->ctrl.ipuser)); |
986 | parm->ctrl.ippathid = path->pathid; | 986 | parm->ctrl.ippathid = path->pathid; |
987 | rc = iucv_call_b2f0(IUCV_QUIESCE, parm); | 987 | rc = iucv_call_b2f0(IUCV_QUIESCE, parm); |
988 | out: | 988 | out: |
989 | local_bh_enable(); | 989 | local_bh_enable(); |
990 | return rc; | 990 | return rc; |
991 | } | 991 | } |
992 | EXPORT_SYMBOL(iucv_path_quiesce); | 992 | EXPORT_SYMBOL(iucv_path_quiesce); |
993 | 993 | ||
994 | /** | 994 | /** |
995 | * iucv_path_resume: | 995 | * iucv_path_resume: |
996 | * @path: address of iucv path structure | 996 | * @path: address of iucv path structure |
997 | * @userdata: 16 bytes of data reflected to the communication partner | 997 | * @userdata: 16 bytes of data reflected to the communication partner |
998 | * | 998 | * |
999 | * This function resumes incoming messages on an IUCV path that has | 999 | * This function resumes incoming messages on an IUCV path that has |
1000 | * been stopped with iucv_path_quiesce. | 1000 | * been stopped with iucv_path_quiesce. |
1001 | * | 1001 | * |
1002 | * Returns the result from the CP IUCV call. | 1002 | * Returns the result from the CP IUCV call. |
1003 | */ | 1003 | */ |
1004 | int iucv_path_resume(struct iucv_path *path, u8 userdata[16]) | 1004 | int iucv_path_resume(struct iucv_path *path, u8 userdata[16]) |
1005 | { | 1005 | { |
1006 | union iucv_param *parm; | 1006 | union iucv_param *parm; |
1007 | int rc; | 1007 | int rc; |
1008 | 1008 | ||
1009 | local_bh_disable(); | 1009 | local_bh_disable(); |
1010 | if (cpus_empty(iucv_buffer_cpumask)) { | 1010 | if (cpus_empty(iucv_buffer_cpumask)) { |
1011 | rc = -EIO; | 1011 | rc = -EIO; |
1012 | goto out; | 1012 | goto out; |
1013 | } | 1013 | } |
1014 | parm = iucv_param[smp_processor_id()]; | 1014 | parm = iucv_param[smp_processor_id()]; |
1015 | memset(parm, 0, sizeof(union iucv_param)); | 1015 | memset(parm, 0, sizeof(union iucv_param)); |
1016 | if (userdata) | 1016 | if (userdata) |
1017 | memcpy(parm->ctrl.ipuser, userdata, sizeof(parm->ctrl.ipuser)); | 1017 | memcpy(parm->ctrl.ipuser, userdata, sizeof(parm->ctrl.ipuser)); |
1018 | parm->ctrl.ippathid = path->pathid; | 1018 | parm->ctrl.ippathid = path->pathid; |
1019 | rc = iucv_call_b2f0(IUCV_RESUME, parm); | 1019 | rc = iucv_call_b2f0(IUCV_RESUME, parm); |
1020 | out: | 1020 | out: |
1021 | local_bh_enable(); | 1021 | local_bh_enable(); |
1022 | return rc; | 1022 | return rc; |
1023 | } | 1023 | } |
1024 | 1024 | ||
1025 | /** | 1025 | /** |
1026 | * iucv_path_sever | 1026 | * iucv_path_sever |
1027 | * @path: address of iucv path structure | 1027 | * @path: address of iucv path structure |
1028 | * @userdata: 16 bytes of data reflected to the communication partner | 1028 | * @userdata: 16 bytes of data reflected to the communication partner |
1029 | * | 1029 | * |
1030 | * This function terminates an IUCV path. | 1030 | * This function terminates an IUCV path. |
1031 | * | 1031 | * |
1032 | * Returns the result from the CP IUCV call. | 1032 | * Returns the result from the CP IUCV call. |
1033 | */ | 1033 | */ |
1034 | int iucv_path_sever(struct iucv_path *path, u8 userdata[16]) | 1034 | int iucv_path_sever(struct iucv_path *path, u8 userdata[16]) |
1035 | { | 1035 | { |
1036 | int rc; | 1036 | int rc; |
1037 | 1037 | ||
1038 | preempt_disable(); | 1038 | preempt_disable(); |
1039 | if (cpus_empty(iucv_buffer_cpumask)) { | 1039 | if (cpus_empty(iucv_buffer_cpumask)) { |
1040 | rc = -EIO; | 1040 | rc = -EIO; |
1041 | goto out; | 1041 | goto out; |
1042 | } | 1042 | } |
1043 | if (iucv_active_cpu != smp_processor_id()) | 1043 | if (iucv_active_cpu != smp_processor_id()) |
1044 | spin_lock_bh(&iucv_table_lock); | 1044 | spin_lock_bh(&iucv_table_lock); |
1045 | rc = iucv_sever_pathid(path->pathid, userdata); | 1045 | rc = iucv_sever_pathid(path->pathid, userdata); |
1046 | iucv_path_table[path->pathid] = NULL; | 1046 | iucv_path_table[path->pathid] = NULL; |
1047 | list_del_init(&path->list); | 1047 | list_del_init(&path->list); |
1048 | if (iucv_active_cpu != smp_processor_id()) | 1048 | if (iucv_active_cpu != smp_processor_id()) |
1049 | spin_unlock_bh(&iucv_table_lock); | 1049 | spin_unlock_bh(&iucv_table_lock); |
1050 | out: | 1050 | out: |
1051 | preempt_enable(); | 1051 | preempt_enable(); |
1052 | return rc; | 1052 | return rc; |
1053 | } | 1053 | } |
1054 | EXPORT_SYMBOL(iucv_path_sever); | 1054 | EXPORT_SYMBOL(iucv_path_sever); |
1055 | 1055 | ||
1056 | /** | 1056 | /** |
1057 | * iucv_message_purge | 1057 | * iucv_message_purge |
1058 | * @path: address of iucv path structure | 1058 | * @path: address of iucv path structure |
1059 | * @msg: address of iucv msg structure | 1059 | * @msg: address of iucv msg structure |
1060 | * @srccls: source class of message | 1060 | * @srccls: source class of message |
1061 | * | 1061 | * |
1062 | * Cancels a message you have sent. | 1062 | * Cancels a message you have sent. |
1063 | * | 1063 | * |
1064 | * Returns the result from the CP IUCV call. | 1064 | * Returns the result from the CP IUCV call. |
1065 | */ | 1065 | */ |
1066 | int iucv_message_purge(struct iucv_path *path, struct iucv_message *msg, | 1066 | int iucv_message_purge(struct iucv_path *path, struct iucv_message *msg, |
1067 | u32 srccls) | 1067 | u32 srccls) |
1068 | { | 1068 | { |
1069 | union iucv_param *parm; | 1069 | union iucv_param *parm; |
1070 | int rc; | 1070 | int rc; |
1071 | 1071 | ||
1072 | local_bh_disable(); | 1072 | local_bh_disable(); |
1073 | if (cpus_empty(iucv_buffer_cpumask)) { | 1073 | if (cpus_empty(iucv_buffer_cpumask)) { |
1074 | rc = -EIO; | 1074 | rc = -EIO; |
1075 | goto out; | 1075 | goto out; |
1076 | } | 1076 | } |
1077 | parm = iucv_param[smp_processor_id()]; | 1077 | parm = iucv_param[smp_processor_id()]; |
1078 | memset(parm, 0, sizeof(union iucv_param)); | 1078 | memset(parm, 0, sizeof(union iucv_param)); |
1079 | parm->purge.ippathid = path->pathid; | 1079 | parm->purge.ippathid = path->pathid; |
1080 | parm->purge.ipmsgid = msg->id; | 1080 | parm->purge.ipmsgid = msg->id; |
1081 | parm->purge.ipsrccls = srccls; | 1081 | parm->purge.ipsrccls = srccls; |
1082 | parm->purge.ipflags1 = IUCV_IPSRCCLS | IUCV_IPFGMID | IUCV_IPFGPID; | 1082 | parm->purge.ipflags1 = IUCV_IPSRCCLS | IUCV_IPFGMID | IUCV_IPFGPID; |
1083 | rc = iucv_call_b2f0(IUCV_PURGE, parm); | 1083 | rc = iucv_call_b2f0(IUCV_PURGE, parm); |
1084 | if (!rc) { | 1084 | if (!rc) { |
1085 | msg->audit = (*(u32 *) &parm->purge.ipaudit) >> 8; | 1085 | msg->audit = (*(u32 *) &parm->purge.ipaudit) >> 8; |
1086 | msg->tag = parm->purge.ipmsgtag; | 1086 | msg->tag = parm->purge.ipmsgtag; |
1087 | } | 1087 | } |
1088 | out: | 1088 | out: |
1089 | local_bh_enable(); | 1089 | local_bh_enable(); |
1090 | return rc; | 1090 | return rc; |
1091 | } | 1091 | } |
1092 | EXPORT_SYMBOL(iucv_message_purge); | 1092 | EXPORT_SYMBOL(iucv_message_purge); |
1093 | 1093 | ||
1094 | /** | 1094 | /** |
1095 | * iucv_message_receive_iprmdata | 1095 | * iucv_message_receive_iprmdata |
1096 | * @path: address of iucv path structure | 1096 | * @path: address of iucv path structure |
1097 | * @msg: address of iucv msg structure | 1097 | * @msg: address of iucv msg structure |
1098 | * @flags: how the message is received (IUCV_IPBUFLST) | 1098 | * @flags: how the message is received (IUCV_IPBUFLST) |
1099 | * @buffer: address of data buffer or address of struct iucv_array | 1099 | * @buffer: address of data buffer or address of struct iucv_array |
1100 | * @size: length of data buffer | 1100 | * @size: length of data buffer |
1101 | * @residual: | 1101 | * @residual: |
1102 | * | 1102 | * |
1103 | * Internal function used by iucv_message_receive and __iucv_message_receive | 1103 | * Internal function used by iucv_message_receive and __iucv_message_receive |
1104 | * to receive RMDATA data stored in struct iucv_message. | 1104 | * to receive RMDATA data stored in struct iucv_message. |
1105 | */ | 1105 | */ |
1106 | static int iucv_message_receive_iprmdata(struct iucv_path *path, | 1106 | static int iucv_message_receive_iprmdata(struct iucv_path *path, |
1107 | struct iucv_message *msg, | 1107 | struct iucv_message *msg, |
1108 | u8 flags, void *buffer, | 1108 | u8 flags, void *buffer, |
1109 | size_t size, size_t *residual) | 1109 | size_t size, size_t *residual) |
1110 | { | 1110 | { |
1111 | struct iucv_array *array; | 1111 | struct iucv_array *array; |
1112 | u8 *rmmsg; | 1112 | u8 *rmmsg; |
1113 | size_t copy; | 1113 | size_t copy; |
1114 | 1114 | ||
1115 | /* | 1115 | /* |
1116 | * Message is 8 bytes long and has been stored to the | 1116 | * Message is 8 bytes long and has been stored to the |
1117 | * message descriptor itself. | 1117 | * message descriptor itself. |
1118 | */ | 1118 | */ |
1119 | if (residual) | 1119 | if (residual) |
1120 | *residual = abs(size - 8); | 1120 | *residual = abs(size - 8); |
1121 | rmmsg = msg->rmmsg; | 1121 | rmmsg = msg->rmmsg; |
1122 | if (flags & IUCV_IPBUFLST) { | 1122 | if (flags & IUCV_IPBUFLST) { |
1123 | /* Copy to struct iucv_array. */ | 1123 | /* Copy to struct iucv_array. */ |
1124 | size = (size < 8) ? size : 8; | 1124 | size = (size < 8) ? size : 8; |
1125 | for (array = buffer; size > 0; array++) { | 1125 | for (array = buffer; size > 0; array++) { |
1126 | copy = min_t(size_t, size, array->length); | 1126 | copy = min_t(size_t, size, array->length); |
1127 | memcpy((u8 *)(addr_t) array->address, | 1127 | memcpy((u8 *)(addr_t) array->address, |
1128 | rmmsg, copy); | 1128 | rmmsg, copy); |
1129 | rmmsg += copy; | 1129 | rmmsg += copy; |
1130 | size -= copy; | 1130 | size -= copy; |
1131 | } | 1131 | } |
1132 | } else { | 1132 | } else { |
1133 | /* Copy to direct buffer. */ | 1133 | /* Copy to direct buffer. */ |
1134 | memcpy(buffer, rmmsg, min_t(size_t, size, 8)); | 1134 | memcpy(buffer, rmmsg, min_t(size_t, size, 8)); |
1135 | } | 1135 | } |
1136 | return 0; | 1136 | return 0; |
1137 | } | 1137 | } |
1138 | 1138 | ||
1139 | /** | 1139 | /** |
1140 | * __iucv_message_receive | 1140 | * __iucv_message_receive |
1141 | * @path: address of iucv path structure | 1141 | * @path: address of iucv path structure |
1142 | * @msg: address of iucv msg structure | 1142 | * @msg: address of iucv msg structure |
1143 | * @flags: how the message is received (IUCV_IPBUFLST) | 1143 | * @flags: how the message is received (IUCV_IPBUFLST) |
1144 | * @buffer: address of data buffer or address of struct iucv_array | 1144 | * @buffer: address of data buffer or address of struct iucv_array |
1145 | * @size: length of data buffer | 1145 | * @size: length of data buffer |
1146 | * @residual: | 1146 | * @residual: |
1147 | * | 1147 | * |
1148 | * This function receives messages that are being sent to you over | 1148 | * This function receives messages that are being sent to you over |
1149 | * established paths. This function will deal with RMDATA messages | 1149 | * established paths. This function will deal with RMDATA messages |
1150 | * embedded in struct iucv_message as well. | 1150 | * embedded in struct iucv_message as well. |
1151 | * | 1151 | * |
1152 | * Locking: no locking | 1152 | * Locking: no locking |
1153 | * | 1153 | * |
1154 | * Returns the result from the CP IUCV call. | 1154 | * Returns the result from the CP IUCV call. |
1155 | */ | 1155 | */ |
1156 | int __iucv_message_receive(struct iucv_path *path, struct iucv_message *msg, | 1156 | int __iucv_message_receive(struct iucv_path *path, struct iucv_message *msg, |
1157 | u8 flags, void *buffer, size_t size, size_t *residual) | 1157 | u8 flags, void *buffer, size_t size, size_t *residual) |
1158 | { | 1158 | { |
1159 | union iucv_param *parm; | 1159 | union iucv_param *parm; |
1160 | int rc; | 1160 | int rc; |
1161 | 1161 | ||
1162 | if (msg->flags & IUCV_IPRMDATA) | 1162 | if (msg->flags & IUCV_IPRMDATA) |
1163 | return iucv_message_receive_iprmdata(path, msg, flags, | 1163 | return iucv_message_receive_iprmdata(path, msg, flags, |
1164 | buffer, size, residual); | 1164 | buffer, size, residual); |
1165 | if (cpus_empty(iucv_buffer_cpumask)) { | 1165 | if (cpus_empty(iucv_buffer_cpumask)) { |
1166 | rc = -EIO; | 1166 | rc = -EIO; |
1167 | goto out; | 1167 | goto out; |
1168 | } | 1168 | } |
1169 | parm = iucv_param[smp_processor_id()]; | 1169 | parm = iucv_param[smp_processor_id()]; |
1170 | memset(parm, 0, sizeof(union iucv_param)); | 1170 | memset(parm, 0, sizeof(union iucv_param)); |
1171 | parm->db.ipbfadr1 = (u32)(addr_t) buffer; | 1171 | parm->db.ipbfadr1 = (u32)(addr_t) buffer; |
1172 | parm->db.ipbfln1f = (u32) size; | 1172 | parm->db.ipbfln1f = (u32) size; |
1173 | parm->db.ipmsgid = msg->id; | 1173 | parm->db.ipmsgid = msg->id; |
1174 | parm->db.ippathid = path->pathid; | 1174 | parm->db.ippathid = path->pathid; |
1175 | parm->db.iptrgcls = msg->class; | 1175 | parm->db.iptrgcls = msg->class; |
1176 | parm->db.ipflags1 = (flags | IUCV_IPFGPID | | 1176 | parm->db.ipflags1 = (flags | IUCV_IPFGPID | |
1177 | IUCV_IPFGMID | IUCV_IPTRGCLS); | 1177 | IUCV_IPFGMID | IUCV_IPTRGCLS); |
1178 | rc = iucv_call_b2f0(IUCV_RECEIVE, parm); | 1178 | rc = iucv_call_b2f0(IUCV_RECEIVE, parm); |
1179 | if (!rc || rc == 5) { | 1179 | if (!rc || rc == 5) { |
1180 | msg->flags = parm->db.ipflags1; | 1180 | msg->flags = parm->db.ipflags1; |
1181 | if (residual) | 1181 | if (residual) |
1182 | *residual = parm->db.ipbfln1f; | 1182 | *residual = parm->db.ipbfln1f; |
1183 | } | 1183 | } |
1184 | out: | 1184 | out: |
1185 | return rc; | 1185 | return rc; |
1186 | } | 1186 | } |
1187 | EXPORT_SYMBOL(__iucv_message_receive); | 1187 | EXPORT_SYMBOL(__iucv_message_receive); |
1188 | 1188 | ||
1189 | /** | 1189 | /** |
1190 | * iucv_message_receive | 1190 | * iucv_message_receive |
1191 | * @path: address of iucv path structure | 1191 | * @path: address of iucv path structure |
1192 | * @msg: address of iucv msg structure | 1192 | * @msg: address of iucv msg structure |
1193 | * @flags: how the message is received (IUCV_IPBUFLST) | 1193 | * @flags: how the message is received (IUCV_IPBUFLST) |
1194 | * @buffer: address of data buffer or address of struct iucv_array | 1194 | * @buffer: address of data buffer or address of struct iucv_array |
1195 | * @size: length of data buffer | 1195 | * @size: length of data buffer |
1196 | * @residual: | 1196 | * @residual: |
1197 | * | 1197 | * |
1198 | * This function receives messages that are being sent to you over | 1198 | * This function receives messages that are being sent to you over |
1199 | * established paths. This function will deal with RMDATA messages | 1199 | * established paths. This function will deal with RMDATA messages |
1200 | * embedded in struct iucv_message as well. | 1200 | * embedded in struct iucv_message as well. |
1201 | * | 1201 | * |
1202 | * Locking: local_bh_enable/local_bh_disable | 1202 | * Locking: local_bh_enable/local_bh_disable |
1203 | * | 1203 | * |
1204 | * Returns the result from the CP IUCV call. | 1204 | * Returns the result from the CP IUCV call. |
1205 | */ | 1205 | */ |
1206 | int iucv_message_receive(struct iucv_path *path, struct iucv_message *msg, | 1206 | int iucv_message_receive(struct iucv_path *path, struct iucv_message *msg, |
1207 | u8 flags, void *buffer, size_t size, size_t *residual) | 1207 | u8 flags, void *buffer, size_t size, size_t *residual) |
1208 | { | 1208 | { |
1209 | int rc; | 1209 | int rc; |
1210 | 1210 | ||
1211 | if (msg->flags & IUCV_IPRMDATA) | 1211 | if (msg->flags & IUCV_IPRMDATA) |
1212 | return iucv_message_receive_iprmdata(path, msg, flags, | 1212 | return iucv_message_receive_iprmdata(path, msg, flags, |
1213 | buffer, size, residual); | 1213 | buffer, size, residual); |
1214 | local_bh_disable(); | 1214 | local_bh_disable(); |
1215 | rc = __iucv_message_receive(path, msg, flags, buffer, size, residual); | 1215 | rc = __iucv_message_receive(path, msg, flags, buffer, size, residual); |
1216 | local_bh_enable(); | 1216 | local_bh_enable(); |
1217 | return rc; | 1217 | return rc; |
1218 | } | 1218 | } |
1219 | EXPORT_SYMBOL(iucv_message_receive); | 1219 | EXPORT_SYMBOL(iucv_message_receive); |
1220 | 1220 | ||
1221 | /** | 1221 | /** |
1222 | * iucv_message_reject | 1222 | * iucv_message_reject |
1223 | * @path: address of iucv path structure | 1223 | * @path: address of iucv path structure |
1224 | * @msg: address of iucv msg structure | 1224 | * @msg: address of iucv msg structure |
1225 | * | 1225 | * |
1226 | * The reject function refuses a specified message. Between the time you | 1226 | * The reject function refuses a specified message. Between the time you |
1227 | * are notified of a message and the time that you complete the message, | 1227 | * are notified of a message and the time that you complete the message, |
1228 | * the message may be rejected. | 1228 | * the message may be rejected. |
1229 | * | 1229 | * |
1230 | * Returns the result from the CP IUCV call. | 1230 | * Returns the result from the CP IUCV call. |
1231 | */ | 1231 | */ |
1232 | int iucv_message_reject(struct iucv_path *path, struct iucv_message *msg) | 1232 | int iucv_message_reject(struct iucv_path *path, struct iucv_message *msg) |
1233 | { | 1233 | { |
1234 | union iucv_param *parm; | 1234 | union iucv_param *parm; |
1235 | int rc; | 1235 | int rc; |
1236 | 1236 | ||
1237 | local_bh_disable(); | 1237 | local_bh_disable(); |
1238 | if (cpus_empty(iucv_buffer_cpumask)) { | 1238 | if (cpus_empty(iucv_buffer_cpumask)) { |
1239 | rc = -EIO; | 1239 | rc = -EIO; |
1240 | goto out; | 1240 | goto out; |
1241 | } | 1241 | } |
1242 | parm = iucv_param[smp_processor_id()]; | 1242 | parm = iucv_param[smp_processor_id()]; |
1243 | memset(parm, 0, sizeof(union iucv_param)); | 1243 | memset(parm, 0, sizeof(union iucv_param)); |
1244 | parm->db.ippathid = path->pathid; | 1244 | parm->db.ippathid = path->pathid; |
1245 | parm->db.ipmsgid = msg->id; | 1245 | parm->db.ipmsgid = msg->id; |
1246 | parm->db.iptrgcls = msg->class; | 1246 | parm->db.iptrgcls = msg->class; |
1247 | parm->db.ipflags1 = (IUCV_IPTRGCLS | IUCV_IPFGMID | IUCV_IPFGPID); | 1247 | parm->db.ipflags1 = (IUCV_IPTRGCLS | IUCV_IPFGMID | IUCV_IPFGPID); |
1248 | rc = iucv_call_b2f0(IUCV_REJECT, parm); | 1248 | rc = iucv_call_b2f0(IUCV_REJECT, parm); |
1249 | out: | 1249 | out: |
1250 | local_bh_enable(); | 1250 | local_bh_enable(); |
1251 | return rc; | 1251 | return rc; |
1252 | } | 1252 | } |
1253 | EXPORT_SYMBOL(iucv_message_reject); | 1253 | EXPORT_SYMBOL(iucv_message_reject); |
1254 | 1254 | ||
1255 | /** | 1255 | /** |
1256 | * iucv_message_reply | 1256 | * iucv_message_reply |
1257 | * @path: address of iucv path structure | 1257 | * @path: address of iucv path structure |
1258 | * @msg: address of iucv msg structure | 1258 | * @msg: address of iucv msg structure |
1259 | * @flags: how the reply is sent (IUCV_IPRMDATA, IUCV_IPPRTY, IUCV_IPBUFLST) | 1259 | * @flags: how the reply is sent (IUCV_IPRMDATA, IUCV_IPPRTY, IUCV_IPBUFLST) |
1260 | * @reply: address of reply data buffer or address of struct iucv_array | 1260 | * @reply: address of reply data buffer or address of struct iucv_array |
1261 | * @size: length of reply data buffer | 1261 | * @size: length of reply data buffer |
1262 | * | 1262 | * |
1263 | * This function responds to the two-way messages that you receive. You | 1263 | * This function responds to the two-way messages that you receive. You |
1264 | * must identify completely the message to which you wish to reply. ie, | 1264 | * must identify completely the message to which you wish to reply. ie, |
1265 | * pathid, msgid, and trgcls. Prmmsg signifies the data is moved into | 1265 | * pathid, msgid, and trgcls. Prmmsg signifies the data is moved into |
1266 | * the parameter list. | 1266 | * the parameter list. |
1267 | * | 1267 | * |
1268 | * Returns the result from the CP IUCV call. | 1268 | * Returns the result from the CP IUCV call. |
1269 | */ | 1269 | */ |
1270 | int iucv_message_reply(struct iucv_path *path, struct iucv_message *msg, | 1270 | int iucv_message_reply(struct iucv_path *path, struct iucv_message *msg, |
1271 | u8 flags, void *reply, size_t size) | 1271 | u8 flags, void *reply, size_t size) |
1272 | { | 1272 | { |
1273 | union iucv_param *parm; | 1273 | union iucv_param *parm; |
1274 | int rc; | 1274 | int rc; |
1275 | 1275 | ||
1276 | local_bh_disable(); | 1276 | local_bh_disable(); |
1277 | if (cpus_empty(iucv_buffer_cpumask)) { | 1277 | if (cpus_empty(iucv_buffer_cpumask)) { |
1278 | rc = -EIO; | 1278 | rc = -EIO; |
1279 | goto out; | 1279 | goto out; |
1280 | } | 1280 | } |
1281 | parm = iucv_param[smp_processor_id()]; | 1281 | parm = iucv_param[smp_processor_id()]; |
1282 | memset(parm, 0, sizeof(union iucv_param)); | 1282 | memset(parm, 0, sizeof(union iucv_param)); |
1283 | if (flags & IUCV_IPRMDATA) { | 1283 | if (flags & IUCV_IPRMDATA) { |
1284 | parm->dpl.ippathid = path->pathid; | 1284 | parm->dpl.ippathid = path->pathid; |
1285 | parm->dpl.ipflags1 = flags; | 1285 | parm->dpl.ipflags1 = flags; |
1286 | parm->dpl.ipmsgid = msg->id; | 1286 | parm->dpl.ipmsgid = msg->id; |
1287 | parm->dpl.iptrgcls = msg->class; | 1287 | parm->dpl.iptrgcls = msg->class; |
1288 | memcpy(parm->dpl.iprmmsg, reply, min_t(size_t, size, 8)); | 1288 | memcpy(parm->dpl.iprmmsg, reply, min_t(size_t, size, 8)); |
1289 | } else { | 1289 | } else { |
1290 | parm->db.ipbfadr1 = (u32)(addr_t) reply; | 1290 | parm->db.ipbfadr1 = (u32)(addr_t) reply; |
1291 | parm->db.ipbfln1f = (u32) size; | 1291 | parm->db.ipbfln1f = (u32) size; |
1292 | parm->db.ippathid = path->pathid; | 1292 | parm->db.ippathid = path->pathid; |
1293 | parm->db.ipflags1 = flags; | 1293 | parm->db.ipflags1 = flags; |
1294 | parm->db.ipmsgid = msg->id; | 1294 | parm->db.ipmsgid = msg->id; |
1295 | parm->db.iptrgcls = msg->class; | 1295 | parm->db.iptrgcls = msg->class; |
1296 | } | 1296 | } |
1297 | rc = iucv_call_b2f0(IUCV_REPLY, parm); | 1297 | rc = iucv_call_b2f0(IUCV_REPLY, parm); |
1298 | out: | 1298 | out: |
1299 | local_bh_enable(); | 1299 | local_bh_enable(); |
1300 | return rc; | 1300 | return rc; |
1301 | } | 1301 | } |
1302 | EXPORT_SYMBOL(iucv_message_reply); | 1302 | EXPORT_SYMBOL(iucv_message_reply); |
1303 | 1303 | ||
1304 | /** | 1304 | /** |
1305 | * __iucv_message_send | 1305 | * __iucv_message_send |
1306 | * @path: address of iucv path structure | 1306 | * @path: address of iucv path structure |
1307 | * @msg: address of iucv msg structure | 1307 | * @msg: address of iucv msg structure |
1308 | * @flags: how the message is sent (IUCV_IPRMDATA, IUCV_IPPRTY, IUCV_IPBUFLST) | 1308 | * @flags: how the message is sent (IUCV_IPRMDATA, IUCV_IPPRTY, IUCV_IPBUFLST) |
1309 | * @srccls: source class of message | 1309 | * @srccls: source class of message |
1310 | * @buffer: address of send buffer or address of struct iucv_array | 1310 | * @buffer: address of send buffer or address of struct iucv_array |
1311 | * @size: length of send buffer | 1311 | * @size: length of send buffer |
1312 | * | 1312 | * |
1313 | * This function transmits data to another application. Data to be | 1313 | * This function transmits data to another application. Data to be |
1314 | * transmitted is in a buffer and this is a one-way message and the | 1314 | * transmitted is in a buffer and this is a one-way message and the |
1315 | * receiver will not reply to the message. | 1315 | * receiver will not reply to the message. |
1316 | * | 1316 | * |
1317 | * Locking: no locking | 1317 | * Locking: no locking |
1318 | * | 1318 | * |
1319 | * Returns the result from the CP IUCV call. | 1319 | * Returns the result from the CP IUCV call. |
1320 | */ | 1320 | */ |
1321 | int __iucv_message_send(struct iucv_path *path, struct iucv_message *msg, | 1321 | int __iucv_message_send(struct iucv_path *path, struct iucv_message *msg, |
1322 | u8 flags, u32 srccls, void *buffer, size_t size) | 1322 | u8 flags, u32 srccls, void *buffer, size_t size) |
1323 | { | 1323 | { |
1324 | union iucv_param *parm; | 1324 | union iucv_param *parm; |
1325 | int rc; | 1325 | int rc; |
1326 | 1326 | ||
1327 | if (cpus_empty(iucv_buffer_cpumask)) { | 1327 | if (cpus_empty(iucv_buffer_cpumask)) { |
1328 | rc = -EIO; | 1328 | rc = -EIO; |
1329 | goto out; | 1329 | goto out; |
1330 | } | 1330 | } |
1331 | parm = iucv_param[smp_processor_id()]; | 1331 | parm = iucv_param[smp_processor_id()]; |
1332 | memset(parm, 0, sizeof(union iucv_param)); | 1332 | memset(parm, 0, sizeof(union iucv_param)); |
1333 | if (flags & IUCV_IPRMDATA) { | 1333 | if (flags & IUCV_IPRMDATA) { |
1334 | /* Message of 8 bytes can be placed into the parameter list. */ | 1334 | /* Message of 8 bytes can be placed into the parameter list. */ |
1335 | parm->dpl.ippathid = path->pathid; | 1335 | parm->dpl.ippathid = path->pathid; |
1336 | parm->dpl.ipflags1 = flags | IUCV_IPNORPY; | 1336 | parm->dpl.ipflags1 = flags | IUCV_IPNORPY; |
1337 | parm->dpl.iptrgcls = msg->class; | 1337 | parm->dpl.iptrgcls = msg->class; |
1338 | parm->dpl.ipsrccls = srccls; | 1338 | parm->dpl.ipsrccls = srccls; |
1339 | parm->dpl.ipmsgtag = msg->tag; | 1339 | parm->dpl.ipmsgtag = msg->tag; |
1340 | memcpy(parm->dpl.iprmmsg, buffer, 8); | 1340 | memcpy(parm->dpl.iprmmsg, buffer, 8); |
1341 | } else { | 1341 | } else { |
1342 | parm->db.ipbfadr1 = (u32)(addr_t) buffer; | 1342 | parm->db.ipbfadr1 = (u32)(addr_t) buffer; |
1343 | parm->db.ipbfln1f = (u32) size; | 1343 | parm->db.ipbfln1f = (u32) size; |
1344 | parm->db.ippathid = path->pathid; | 1344 | parm->db.ippathid = path->pathid; |
1345 | parm->db.ipflags1 = flags | IUCV_IPNORPY; | 1345 | parm->db.ipflags1 = flags | IUCV_IPNORPY; |
1346 | parm->db.iptrgcls = msg->class; | 1346 | parm->db.iptrgcls = msg->class; |
1347 | parm->db.ipsrccls = srccls; | 1347 | parm->db.ipsrccls = srccls; |
1348 | parm->db.ipmsgtag = msg->tag; | 1348 | parm->db.ipmsgtag = msg->tag; |
1349 | } | 1349 | } |
1350 | rc = iucv_call_b2f0(IUCV_SEND, parm); | 1350 | rc = iucv_call_b2f0(IUCV_SEND, parm); |
1351 | if (!rc) | 1351 | if (!rc) |
1352 | msg->id = parm->db.ipmsgid; | 1352 | msg->id = parm->db.ipmsgid; |
1353 | out: | 1353 | out: |
1354 | return rc; | 1354 | return rc; |
1355 | } | 1355 | } |
1356 | EXPORT_SYMBOL(__iucv_message_send); | 1356 | EXPORT_SYMBOL(__iucv_message_send); |
1357 | 1357 | ||
1358 | /** | 1358 | /** |
1359 | * iucv_message_send | 1359 | * iucv_message_send |
1360 | * @path: address of iucv path structure | 1360 | * @path: address of iucv path structure |
1361 | * @msg: address of iucv msg structure | 1361 | * @msg: address of iucv msg structure |
1362 | * @flags: how the message is sent (IUCV_IPRMDATA, IUCV_IPPRTY, IUCV_IPBUFLST) | 1362 | * @flags: how the message is sent (IUCV_IPRMDATA, IUCV_IPPRTY, IUCV_IPBUFLST) |
1363 | * @srccls: source class of message | 1363 | * @srccls: source class of message |
1364 | * @buffer: address of send buffer or address of struct iucv_array | 1364 | * @buffer: address of send buffer or address of struct iucv_array |
1365 | * @size: length of send buffer | 1365 | * @size: length of send buffer |
1366 | * | 1366 | * |
1367 | * This function transmits data to another application. Data to be | 1367 | * This function transmits data to another application. Data to be |
1368 | * transmitted is in a buffer and this is a one-way message and the | 1368 | * transmitted is in a buffer and this is a one-way message and the |
1369 | * receiver will not reply to the message. | 1369 | * receiver will not reply to the message. |
1370 | * | 1370 | * |
1371 | * Locking: local_bh_enable/local_bh_disable | 1371 | * Locking: local_bh_enable/local_bh_disable |
1372 | * | 1372 | * |
1373 | * Returns the result from the CP IUCV call. | 1373 | * Returns the result from the CP IUCV call. |
1374 | */ | 1374 | */ |
1375 | int iucv_message_send(struct iucv_path *path, struct iucv_message *msg, | 1375 | int iucv_message_send(struct iucv_path *path, struct iucv_message *msg, |
1376 | u8 flags, u32 srccls, void *buffer, size_t size) | 1376 | u8 flags, u32 srccls, void *buffer, size_t size) |
1377 | { | 1377 | { |
1378 | int rc; | 1378 | int rc; |
1379 | 1379 | ||
1380 | local_bh_disable(); | 1380 | local_bh_disable(); |
1381 | rc = __iucv_message_send(path, msg, flags, srccls, buffer, size); | 1381 | rc = __iucv_message_send(path, msg, flags, srccls, buffer, size); |
1382 | local_bh_enable(); | 1382 | local_bh_enable(); |
1383 | return rc; | 1383 | return rc; |
1384 | } | 1384 | } |
1385 | EXPORT_SYMBOL(iucv_message_send); | 1385 | EXPORT_SYMBOL(iucv_message_send); |
1386 | 1386 | ||
1387 | /** | 1387 | /** |
1388 | * iucv_message_send2way | 1388 | * iucv_message_send2way |
1389 | * @path: address of iucv path structure | 1389 | * @path: address of iucv path structure |
1390 | * @msg: address of iucv msg structure | 1390 | * @msg: address of iucv msg structure |
1391 | * @flags: how the message is sent and the reply is received | 1391 | * @flags: how the message is sent and the reply is received |
1392 | * (IUCV_IPRMDATA, IUCV_IPBUFLST, IUCV_IPPRTY, IUCV_ANSLST) | 1392 | * (IUCV_IPRMDATA, IUCV_IPBUFLST, IUCV_IPPRTY, IUCV_ANSLST) |
1393 | * @srccls: source class of message | 1393 | * @srccls: source class of message |
1394 | * @buffer: address of send buffer or address of struct iucv_array | 1394 | * @buffer: address of send buffer or address of struct iucv_array |
1395 | * @size: length of send buffer | 1395 | * @size: length of send buffer |
1396 | * @ansbuf: address of answer buffer or address of struct iucv_array | 1396 | * @ansbuf: address of answer buffer or address of struct iucv_array |
1397 | * @asize: size of reply buffer | 1397 | * @asize: size of reply buffer |
1398 | * | 1398 | * |
1399 | * This function transmits data to another application. Data to be | 1399 | * This function transmits data to another application. Data to be |
1400 | * transmitted is in a buffer. The receiver of the send is expected to | 1400 | * transmitted is in a buffer. The receiver of the send is expected to |
1401 | * reply to the message and a buffer is provided into which IUCV moves | 1401 | * reply to the message and a buffer is provided into which IUCV moves |
1402 | * the reply to this message. | 1402 | * the reply to this message. |
1403 | * | 1403 | * |
1404 | * Returns the result from the CP IUCV call. | 1404 | * Returns the result from the CP IUCV call. |
1405 | */ | 1405 | */ |
1406 | int iucv_message_send2way(struct iucv_path *path, struct iucv_message *msg, | 1406 | int iucv_message_send2way(struct iucv_path *path, struct iucv_message *msg, |
1407 | u8 flags, u32 srccls, void *buffer, size_t size, | 1407 | u8 flags, u32 srccls, void *buffer, size_t size, |
1408 | void *answer, size_t asize, size_t *residual) | 1408 | void *answer, size_t asize, size_t *residual) |
1409 | { | 1409 | { |
1410 | union iucv_param *parm; | 1410 | union iucv_param *parm; |
1411 | int rc; | 1411 | int rc; |
1412 | 1412 | ||
1413 | local_bh_disable(); | 1413 | local_bh_disable(); |
1414 | if (cpus_empty(iucv_buffer_cpumask)) { | 1414 | if (cpus_empty(iucv_buffer_cpumask)) { |
1415 | rc = -EIO; | 1415 | rc = -EIO; |
1416 | goto out; | 1416 | goto out; |
1417 | } | 1417 | } |
1418 | parm = iucv_param[smp_processor_id()]; | 1418 | parm = iucv_param[smp_processor_id()]; |
1419 | memset(parm, 0, sizeof(union iucv_param)); | 1419 | memset(parm, 0, sizeof(union iucv_param)); |
1420 | if (flags & IUCV_IPRMDATA) { | 1420 | if (flags & IUCV_IPRMDATA) { |
1421 | parm->dpl.ippathid = path->pathid; | 1421 | parm->dpl.ippathid = path->pathid; |
1422 | parm->dpl.ipflags1 = path->flags; /* priority message */ | 1422 | parm->dpl.ipflags1 = path->flags; /* priority message */ |
1423 | parm->dpl.iptrgcls = msg->class; | 1423 | parm->dpl.iptrgcls = msg->class; |
1424 | parm->dpl.ipsrccls = srccls; | 1424 | parm->dpl.ipsrccls = srccls; |
1425 | parm->dpl.ipmsgtag = msg->tag; | 1425 | parm->dpl.ipmsgtag = msg->tag; |
1426 | parm->dpl.ipbfadr2 = (u32)(addr_t) answer; | 1426 | parm->dpl.ipbfadr2 = (u32)(addr_t) answer; |
1427 | parm->dpl.ipbfln2f = (u32) asize; | 1427 | parm->dpl.ipbfln2f = (u32) asize; |
1428 | memcpy(parm->dpl.iprmmsg, buffer, 8); | 1428 | memcpy(parm->dpl.iprmmsg, buffer, 8); |
1429 | } else { | 1429 | } else { |
1430 | parm->db.ippathid = path->pathid; | 1430 | parm->db.ippathid = path->pathid; |
1431 | parm->db.ipflags1 = path->flags; /* priority message */ | 1431 | parm->db.ipflags1 = path->flags; /* priority message */ |
1432 | parm->db.iptrgcls = msg->class; | 1432 | parm->db.iptrgcls = msg->class; |
1433 | parm->db.ipsrccls = srccls; | 1433 | parm->db.ipsrccls = srccls; |
1434 | parm->db.ipmsgtag = msg->tag; | 1434 | parm->db.ipmsgtag = msg->tag; |
1435 | parm->db.ipbfadr1 = (u32)(addr_t) buffer; | 1435 | parm->db.ipbfadr1 = (u32)(addr_t) buffer; |
1436 | parm->db.ipbfln1f = (u32) size; | 1436 | parm->db.ipbfln1f = (u32) size; |
1437 | parm->db.ipbfadr2 = (u32)(addr_t) answer; | 1437 | parm->db.ipbfadr2 = (u32)(addr_t) answer; |
1438 | parm->db.ipbfln2f = (u32) asize; | 1438 | parm->db.ipbfln2f = (u32) asize; |
1439 | } | 1439 | } |
1440 | rc = iucv_call_b2f0(IUCV_SEND, parm); | 1440 | rc = iucv_call_b2f0(IUCV_SEND, parm); |
1441 | if (!rc) | 1441 | if (!rc) |
1442 | msg->id = parm->db.ipmsgid; | 1442 | msg->id = parm->db.ipmsgid; |
1443 | out: | 1443 | out: |
1444 | local_bh_enable(); | 1444 | local_bh_enable(); |
1445 | return rc; | 1445 | return rc; |
1446 | } | 1446 | } |
1447 | EXPORT_SYMBOL(iucv_message_send2way); | 1447 | EXPORT_SYMBOL(iucv_message_send2way); |
1448 | 1448 | ||
1449 | /** | 1449 | /** |
1450 | * iucv_path_pending | 1450 | * iucv_path_pending |
1451 | * @data: Pointer to external interrupt buffer | 1451 | * @data: Pointer to external interrupt buffer |
1452 | * | 1452 | * |
1453 | * Process connection pending work item. Called from tasklet while holding | 1453 | * Process connection pending work item. Called from tasklet while holding |
1454 | * iucv_table_lock. | 1454 | * iucv_table_lock. |
1455 | */ | 1455 | */ |
1456 | struct iucv_path_pending { | 1456 | struct iucv_path_pending { |
1457 | u16 ippathid; | 1457 | u16 ippathid; |
1458 | u8 ipflags1; | 1458 | u8 ipflags1; |
1459 | u8 iptype; | 1459 | u8 iptype; |
1460 | u16 ipmsglim; | 1460 | u16 ipmsglim; |
1461 | u16 res1; | 1461 | u16 res1; |
1462 | u8 ipvmid[8]; | 1462 | u8 ipvmid[8]; |
1463 | u8 ipuser[16]; | 1463 | u8 ipuser[16]; |
1464 | u32 res3; | 1464 | u32 res3; |
1465 | u8 ippollfg; | 1465 | u8 ippollfg; |
1466 | u8 res4[3]; | 1466 | u8 res4[3]; |
1467 | } __packed; | 1467 | } __packed; |
1468 | 1468 | ||
1469 | static void iucv_path_pending(struct iucv_irq_data *data) | 1469 | static void iucv_path_pending(struct iucv_irq_data *data) |
1470 | { | 1470 | { |
1471 | struct iucv_path_pending *ipp = (void *) data; | 1471 | struct iucv_path_pending *ipp = (void *) data; |
1472 | struct iucv_handler *handler; | 1472 | struct iucv_handler *handler; |
1473 | struct iucv_path *path; | 1473 | struct iucv_path *path; |
1474 | char *error; | 1474 | char *error; |
1475 | 1475 | ||
1476 | BUG_ON(iucv_path_table[ipp->ippathid]); | 1476 | BUG_ON(iucv_path_table[ipp->ippathid]); |
1477 | /* New pathid, handler found. Create a new path struct. */ | 1477 | /* New pathid, handler found. Create a new path struct. */ |
1478 | error = iucv_error_no_memory; | 1478 | error = iucv_error_no_memory; |
1479 | path = iucv_path_alloc(ipp->ipmsglim, ipp->ipflags1, GFP_ATOMIC); | 1479 | path = iucv_path_alloc(ipp->ipmsglim, ipp->ipflags1, GFP_ATOMIC); |
1480 | if (!path) | 1480 | if (!path) |
1481 | goto out_sever; | 1481 | goto out_sever; |
1482 | path->pathid = ipp->ippathid; | 1482 | path->pathid = ipp->ippathid; |
1483 | iucv_path_table[path->pathid] = path; | 1483 | iucv_path_table[path->pathid] = path; |
1484 | EBCASC(ipp->ipvmid, 8); | 1484 | EBCASC(ipp->ipvmid, 8); |
1485 | 1485 | ||
1486 | /* Call registered handler until one is found that wants the path. */ | 1486 | /* Call registered handler until one is found that wants the path. */ |
1487 | list_for_each_entry(handler, &iucv_handler_list, list) { | 1487 | list_for_each_entry(handler, &iucv_handler_list, list) { |
1488 | if (!handler->path_pending) | 1488 | if (!handler->path_pending) |
1489 | continue; | 1489 | continue; |
1490 | /* | 1490 | /* |
1491 | * Add path to handler to allow a call to iucv_path_sever | 1491 | * Add path to handler to allow a call to iucv_path_sever |
1492 | * inside the path_pending function. If the handler returns | 1492 | * inside the path_pending function. If the handler returns |
1493 | * an error remove the path from the handler again. | 1493 | * an error remove the path from the handler again. |
1494 | */ | 1494 | */ |
1495 | list_add(&path->list, &handler->paths); | 1495 | list_add(&path->list, &handler->paths); |
1496 | path->handler = handler; | 1496 | path->handler = handler; |
1497 | if (!handler->path_pending(path, ipp->ipvmid, ipp->ipuser)) | 1497 | if (!handler->path_pending(path, ipp->ipvmid, ipp->ipuser)) |
1498 | return; | 1498 | return; |
1499 | list_del(&path->list); | 1499 | list_del(&path->list); |
1500 | path->handler = NULL; | 1500 | path->handler = NULL; |
1501 | } | 1501 | } |
1502 | /* No handler wanted the path. */ | 1502 | /* No handler wanted the path. */ |
1503 | iucv_path_table[path->pathid] = NULL; | 1503 | iucv_path_table[path->pathid] = NULL; |
1504 | iucv_path_free(path); | 1504 | iucv_path_free(path); |
1505 | error = iucv_error_no_listener; | 1505 | error = iucv_error_no_listener; |
1506 | out_sever: | 1506 | out_sever: |
1507 | iucv_sever_pathid(ipp->ippathid, error); | 1507 | iucv_sever_pathid(ipp->ippathid, error); |
1508 | } | 1508 | } |
1509 | 1509 | ||
1510 | /** | 1510 | /** |
1511 | * iucv_path_complete | 1511 | * iucv_path_complete |
1512 | * @data: Pointer to external interrupt buffer | 1512 | * @data: Pointer to external interrupt buffer |
1513 | * | 1513 | * |
1514 | * Process connection complete work item. Called from tasklet while holding | 1514 | * Process connection complete work item. Called from tasklet while holding |
1515 | * iucv_table_lock. | 1515 | * iucv_table_lock. |
1516 | */ | 1516 | */ |
1517 | struct iucv_path_complete { | 1517 | struct iucv_path_complete { |
1518 | u16 ippathid; | 1518 | u16 ippathid; |
1519 | u8 ipflags1; | 1519 | u8 ipflags1; |
1520 | u8 iptype; | 1520 | u8 iptype; |
1521 | u16 ipmsglim; | 1521 | u16 ipmsglim; |
1522 | u16 res1; | 1522 | u16 res1; |
1523 | u8 res2[8]; | 1523 | u8 res2[8]; |
1524 | u8 ipuser[16]; | 1524 | u8 ipuser[16]; |
1525 | u32 res3; | 1525 | u32 res3; |
1526 | u8 ippollfg; | 1526 | u8 ippollfg; |
1527 | u8 res4[3]; | 1527 | u8 res4[3]; |
1528 | } __packed; | 1528 | } __packed; |
1529 | 1529 | ||
1530 | static void iucv_path_complete(struct iucv_irq_data *data) | 1530 | static void iucv_path_complete(struct iucv_irq_data *data) |
1531 | { | 1531 | { |
1532 | struct iucv_path_complete *ipc = (void *) data; | 1532 | struct iucv_path_complete *ipc = (void *) data; |
1533 | struct iucv_path *path = iucv_path_table[ipc->ippathid]; | 1533 | struct iucv_path *path = iucv_path_table[ipc->ippathid]; |
1534 | 1534 | ||
1535 | if (path) | 1535 | if (path) |
1536 | path->flags = ipc->ipflags1; | 1536 | path->flags = ipc->ipflags1; |
1537 | if (path && path->handler && path->handler->path_complete) | 1537 | if (path && path->handler && path->handler->path_complete) |
1538 | path->handler->path_complete(path, ipc->ipuser); | 1538 | path->handler->path_complete(path, ipc->ipuser); |
1539 | } | 1539 | } |
1540 | 1540 | ||
1541 | /** | 1541 | /** |
1542 | * iucv_path_severed | 1542 | * iucv_path_severed |
1543 | * @data: Pointer to external interrupt buffer | 1543 | * @data: Pointer to external interrupt buffer |
1544 | * | 1544 | * |
1545 | * Process connection severed work item. Called from tasklet while holding | 1545 | * Process connection severed work item. Called from tasklet while holding |
1546 | * iucv_table_lock. | 1546 | * iucv_table_lock. |
1547 | */ | 1547 | */ |
1548 | struct iucv_path_severed { | 1548 | struct iucv_path_severed { |
1549 | u16 ippathid; | 1549 | u16 ippathid; |
1550 | u8 res1; | 1550 | u8 res1; |
1551 | u8 iptype; | 1551 | u8 iptype; |
1552 | u32 res2; | 1552 | u32 res2; |
1553 | u8 res3[8]; | 1553 | u8 res3[8]; |
1554 | u8 ipuser[16]; | 1554 | u8 ipuser[16]; |
1555 | u32 res4; | 1555 | u32 res4; |
1556 | u8 ippollfg; | 1556 | u8 ippollfg; |
1557 | u8 res5[3]; | 1557 | u8 res5[3]; |
1558 | } __packed; | 1558 | } __packed; |
1559 | 1559 | ||
1560 | static void iucv_path_severed(struct iucv_irq_data *data) | 1560 | static void iucv_path_severed(struct iucv_irq_data *data) |
1561 | { | 1561 | { |
1562 | struct iucv_path_severed *ips = (void *) data; | 1562 | struct iucv_path_severed *ips = (void *) data; |
1563 | struct iucv_path *path = iucv_path_table[ips->ippathid]; | 1563 | struct iucv_path *path = iucv_path_table[ips->ippathid]; |
1564 | 1564 | ||
1565 | if (!path || !path->handler) /* Already severed */ | 1565 | if (!path || !path->handler) /* Already severed */ |
1566 | return; | 1566 | return; |
1567 | if (path->handler->path_severed) | 1567 | if (path->handler->path_severed) |
1568 | path->handler->path_severed(path, ips->ipuser); | 1568 | path->handler->path_severed(path, ips->ipuser); |
1569 | else { | 1569 | else { |
1570 | iucv_sever_pathid(path->pathid, NULL); | 1570 | iucv_sever_pathid(path->pathid, NULL); |
1571 | iucv_path_table[path->pathid] = NULL; | 1571 | iucv_path_table[path->pathid] = NULL; |
1572 | list_del(&path->list); | 1572 | list_del(&path->list); |
1573 | iucv_path_free(path); | 1573 | iucv_path_free(path); |
1574 | } | 1574 | } |
1575 | } | 1575 | } |
1576 | 1576 | ||
1577 | /** | 1577 | /** |
1578 | * iucv_path_quiesced | 1578 | * iucv_path_quiesced |
1579 | * @data: Pointer to external interrupt buffer | 1579 | * @data: Pointer to external interrupt buffer |
1580 | * | 1580 | * |
1581 | * Process connection quiesced work item. Called from tasklet while holding | 1581 | * Process connection quiesced work item. Called from tasklet while holding |
1582 | * iucv_table_lock. | 1582 | * iucv_table_lock. |
1583 | */ | 1583 | */ |
1584 | struct iucv_path_quiesced { | 1584 | struct iucv_path_quiesced { |
1585 | u16 ippathid; | 1585 | u16 ippathid; |
1586 | u8 res1; | 1586 | u8 res1; |
1587 | u8 iptype; | 1587 | u8 iptype; |
1588 | u32 res2; | 1588 | u32 res2; |
1589 | u8 res3[8]; | 1589 | u8 res3[8]; |
1590 | u8 ipuser[16]; | 1590 | u8 ipuser[16]; |
1591 | u32 res4; | 1591 | u32 res4; |
1592 | u8 ippollfg; | 1592 | u8 ippollfg; |
1593 | u8 res5[3]; | 1593 | u8 res5[3]; |
1594 | } __packed; | 1594 | } __packed; |
1595 | 1595 | ||
1596 | static void iucv_path_quiesced(struct iucv_irq_data *data) | 1596 | static void iucv_path_quiesced(struct iucv_irq_data *data) |
1597 | { | 1597 | { |
1598 | struct iucv_path_quiesced *ipq = (void *) data; | 1598 | struct iucv_path_quiesced *ipq = (void *) data; |
1599 | struct iucv_path *path = iucv_path_table[ipq->ippathid]; | 1599 | struct iucv_path *path = iucv_path_table[ipq->ippathid]; |
1600 | 1600 | ||
1601 | if (path && path->handler && path->handler->path_quiesced) | 1601 | if (path && path->handler && path->handler->path_quiesced) |
1602 | path->handler->path_quiesced(path, ipq->ipuser); | 1602 | path->handler->path_quiesced(path, ipq->ipuser); |
1603 | } | 1603 | } |
1604 | 1604 | ||
1605 | /** | 1605 | /** |
1606 | * iucv_path_resumed | 1606 | * iucv_path_resumed |
1607 | * @data: Pointer to external interrupt buffer | 1607 | * @data: Pointer to external interrupt buffer |
1608 | * | 1608 | * |
1609 | * Process connection resumed work item. Called from tasklet while holding | 1609 | * Process connection resumed work item. Called from tasklet while holding |
1610 | * iucv_table_lock. | 1610 | * iucv_table_lock. |
1611 | */ | 1611 | */ |
1612 | struct iucv_path_resumed { | 1612 | struct iucv_path_resumed { |
1613 | u16 ippathid; | 1613 | u16 ippathid; |
1614 | u8 res1; | 1614 | u8 res1; |
1615 | u8 iptype; | 1615 | u8 iptype; |
1616 | u32 res2; | 1616 | u32 res2; |
1617 | u8 res3[8]; | 1617 | u8 res3[8]; |
1618 | u8 ipuser[16]; | 1618 | u8 ipuser[16]; |
1619 | u32 res4; | 1619 | u32 res4; |
1620 | u8 ippollfg; | 1620 | u8 ippollfg; |
1621 | u8 res5[3]; | 1621 | u8 res5[3]; |
1622 | } __packed; | 1622 | } __packed; |
1623 | 1623 | ||
1624 | static void iucv_path_resumed(struct iucv_irq_data *data) | 1624 | static void iucv_path_resumed(struct iucv_irq_data *data) |
1625 | { | 1625 | { |
1626 | struct iucv_path_resumed *ipr = (void *) data; | 1626 | struct iucv_path_resumed *ipr = (void *) data; |
1627 | struct iucv_path *path = iucv_path_table[ipr->ippathid]; | 1627 | struct iucv_path *path = iucv_path_table[ipr->ippathid]; |
1628 | 1628 | ||
1629 | if (path && path->handler && path->handler->path_resumed) | 1629 | if (path && path->handler && path->handler->path_resumed) |
1630 | path->handler->path_resumed(path, ipr->ipuser); | 1630 | path->handler->path_resumed(path, ipr->ipuser); |
1631 | } | 1631 | } |
1632 | 1632 | ||
1633 | /** | 1633 | /** |
1634 | * iucv_message_complete | 1634 | * iucv_message_complete |
1635 | * @data: Pointer to external interrupt buffer | 1635 | * @data: Pointer to external interrupt buffer |
1636 | * | 1636 | * |
1637 | * Process message complete work item. Called from tasklet while holding | 1637 | * Process message complete work item. Called from tasklet while holding |
1638 | * iucv_table_lock. | 1638 | * iucv_table_lock. |
1639 | */ | 1639 | */ |
1640 | struct iucv_message_complete { | 1640 | struct iucv_message_complete { |
1641 | u16 ippathid; | 1641 | u16 ippathid; |
1642 | u8 ipflags1; | 1642 | u8 ipflags1; |
1643 | u8 iptype; | 1643 | u8 iptype; |
1644 | u32 ipmsgid; | 1644 | u32 ipmsgid; |
1645 | u32 ipaudit; | 1645 | u32 ipaudit; |
1646 | u8 iprmmsg[8]; | 1646 | u8 iprmmsg[8]; |
1647 | u32 ipsrccls; | 1647 | u32 ipsrccls; |
1648 | u32 ipmsgtag; | 1648 | u32 ipmsgtag; |
1649 | u32 res; | 1649 | u32 res; |
1650 | u32 ipbfln2f; | 1650 | u32 ipbfln2f; |
1651 | u8 ippollfg; | 1651 | u8 ippollfg; |
1652 | u8 res2[3]; | 1652 | u8 res2[3]; |
1653 | } __packed; | 1653 | } __packed; |
1654 | 1654 | ||
1655 | static void iucv_message_complete(struct iucv_irq_data *data) | 1655 | static void iucv_message_complete(struct iucv_irq_data *data) |
1656 | { | 1656 | { |
1657 | struct iucv_message_complete *imc = (void *) data; | 1657 | struct iucv_message_complete *imc = (void *) data; |
1658 | struct iucv_path *path = iucv_path_table[imc->ippathid]; | 1658 | struct iucv_path *path = iucv_path_table[imc->ippathid]; |
1659 | struct iucv_message msg; | 1659 | struct iucv_message msg; |
1660 | 1660 | ||
1661 | if (path && path->handler && path->handler->message_complete) { | 1661 | if (path && path->handler && path->handler->message_complete) { |
1662 | msg.flags = imc->ipflags1; | 1662 | msg.flags = imc->ipflags1; |
1663 | msg.id = imc->ipmsgid; | 1663 | msg.id = imc->ipmsgid; |
1664 | msg.audit = imc->ipaudit; | 1664 | msg.audit = imc->ipaudit; |
1665 | memcpy(msg.rmmsg, imc->iprmmsg, 8); | 1665 | memcpy(msg.rmmsg, imc->iprmmsg, 8); |
1666 | msg.class = imc->ipsrccls; | 1666 | msg.class = imc->ipsrccls; |
1667 | msg.tag = imc->ipmsgtag; | 1667 | msg.tag = imc->ipmsgtag; |
1668 | msg.length = imc->ipbfln2f; | 1668 | msg.length = imc->ipbfln2f; |
1669 | path->handler->message_complete(path, &msg); | 1669 | path->handler->message_complete(path, &msg); |
1670 | } | 1670 | } |
1671 | } | 1671 | } |
1672 | 1672 | ||
1673 | /** | 1673 | /** |
1674 | * iucv_message_pending | 1674 | * iucv_message_pending |
1675 | * @data: Pointer to external interrupt buffer | 1675 | * @data: Pointer to external interrupt buffer |
1676 | * | 1676 | * |
1677 | * Process message pending work item. Called from tasklet while holding | 1677 | * Process message pending work item. Called from tasklet while holding |
1678 | * iucv_table_lock. | 1678 | * iucv_table_lock. |
1679 | */ | 1679 | */ |
1680 | struct iucv_message_pending { | 1680 | struct iucv_message_pending { |
1681 | u16 ippathid; | 1681 | u16 ippathid; |
1682 | u8 ipflags1; | 1682 | u8 ipflags1; |
1683 | u8 iptype; | 1683 | u8 iptype; |
1684 | u32 ipmsgid; | 1684 | u32 ipmsgid; |
1685 | u32 iptrgcls; | 1685 | u32 iptrgcls; |
1686 | union { | 1686 | union { |
1687 | u32 iprmmsg1_u32; | 1687 | u32 iprmmsg1_u32; |
1688 | u8 iprmmsg1[4]; | 1688 | u8 iprmmsg1[4]; |
1689 | } ln1msg1; | 1689 | } ln1msg1; |
1690 | union { | 1690 | union { |
1691 | u32 ipbfln1f; | 1691 | u32 ipbfln1f; |
1692 | u8 iprmmsg2[4]; | 1692 | u8 iprmmsg2[4]; |
1693 | } ln1msg2; | 1693 | } ln1msg2; |
1694 | u32 res1[3]; | 1694 | u32 res1[3]; |
1695 | u32 ipbfln2f; | 1695 | u32 ipbfln2f; |
1696 | u8 ippollfg; | 1696 | u8 ippollfg; |
1697 | u8 res2[3]; | 1697 | u8 res2[3]; |
1698 | } __packed; | 1698 | } __packed; |
1699 | 1699 | ||
1700 | static void iucv_message_pending(struct iucv_irq_data *data) | 1700 | static void iucv_message_pending(struct iucv_irq_data *data) |
1701 | { | 1701 | { |
1702 | struct iucv_message_pending *imp = (void *) data; | 1702 | struct iucv_message_pending *imp = (void *) data; |
1703 | struct iucv_path *path = iucv_path_table[imp->ippathid]; | 1703 | struct iucv_path *path = iucv_path_table[imp->ippathid]; |
1704 | struct iucv_message msg; | 1704 | struct iucv_message msg; |
1705 | 1705 | ||
1706 | if (path && path->handler && path->handler->message_pending) { | 1706 | if (path && path->handler && path->handler->message_pending) { |
1707 | msg.flags = imp->ipflags1; | 1707 | msg.flags = imp->ipflags1; |
1708 | msg.id = imp->ipmsgid; | 1708 | msg.id = imp->ipmsgid; |
1709 | msg.class = imp->iptrgcls; | 1709 | msg.class = imp->iptrgcls; |
1710 | if (imp->ipflags1 & IUCV_IPRMDATA) { | 1710 | if (imp->ipflags1 & IUCV_IPRMDATA) { |
1711 | memcpy(msg.rmmsg, imp->ln1msg1.iprmmsg1, 8); | 1711 | memcpy(msg.rmmsg, imp->ln1msg1.iprmmsg1, 8); |
1712 | msg.length = 8; | 1712 | msg.length = 8; |
1713 | } else | 1713 | } else |
1714 | msg.length = imp->ln1msg2.ipbfln1f; | 1714 | msg.length = imp->ln1msg2.ipbfln1f; |
1715 | msg.reply_size = imp->ipbfln2f; | 1715 | msg.reply_size = imp->ipbfln2f; |
1716 | path->handler->message_pending(path, &msg); | 1716 | path->handler->message_pending(path, &msg); |
1717 | } | 1717 | } |
1718 | } | 1718 | } |
1719 | 1719 | ||
1720 | /** | 1720 | /** |
1721 | * iucv_tasklet_fn: | 1721 | * iucv_tasklet_fn: |
1722 | * | 1722 | * |
1723 | * This tasklet loops over the queue of irq buffers created by | 1723 | * This tasklet loops over the queue of irq buffers created by |
1724 | * iucv_external_interrupt, calls the appropriate action handler | 1724 | * iucv_external_interrupt, calls the appropriate action handler |
1725 | * and then frees the buffer. | 1725 | * and then frees the buffer. |
1726 | */ | 1726 | */ |
1727 | static void iucv_tasklet_fn(unsigned long ignored) | 1727 | static void iucv_tasklet_fn(unsigned long ignored) |
1728 | { | 1728 | { |
1729 | typedef void iucv_irq_fn(struct iucv_irq_data *); | 1729 | typedef void iucv_irq_fn(struct iucv_irq_data *); |
1730 | static iucv_irq_fn *irq_fn[] = { | 1730 | static iucv_irq_fn *irq_fn[] = { |
1731 | [0x02] = iucv_path_complete, | 1731 | [0x02] = iucv_path_complete, |
1732 | [0x03] = iucv_path_severed, | 1732 | [0x03] = iucv_path_severed, |
1733 | [0x04] = iucv_path_quiesced, | 1733 | [0x04] = iucv_path_quiesced, |
1734 | [0x05] = iucv_path_resumed, | 1734 | [0x05] = iucv_path_resumed, |
1735 | [0x06] = iucv_message_complete, | 1735 | [0x06] = iucv_message_complete, |
1736 | [0x07] = iucv_message_complete, | 1736 | [0x07] = iucv_message_complete, |
1737 | [0x08] = iucv_message_pending, | 1737 | [0x08] = iucv_message_pending, |
1738 | [0x09] = iucv_message_pending, | 1738 | [0x09] = iucv_message_pending, |
1739 | }; | 1739 | }; |
1740 | LIST_HEAD(task_queue); | 1740 | LIST_HEAD(task_queue); |
1741 | struct iucv_irq_list *p, *n; | 1741 | struct iucv_irq_list *p, *n; |
1742 | 1742 | ||
1743 | /* Serialize tasklet, iucv_path_sever and iucv_path_connect. */ | 1743 | /* Serialize tasklet, iucv_path_sever and iucv_path_connect. */ |
1744 | if (!spin_trylock(&iucv_table_lock)) { | 1744 | if (!spin_trylock(&iucv_table_lock)) { |
1745 | tasklet_schedule(&iucv_tasklet); | 1745 | tasklet_schedule(&iucv_tasklet); |
1746 | return; | 1746 | return; |
1747 | } | 1747 | } |
1748 | iucv_active_cpu = smp_processor_id(); | 1748 | iucv_active_cpu = smp_processor_id(); |
1749 | 1749 | ||
1750 | spin_lock_irq(&iucv_queue_lock); | 1750 | spin_lock_irq(&iucv_queue_lock); |
1751 | list_splice_init(&iucv_task_queue, &task_queue); | 1751 | list_splice_init(&iucv_task_queue, &task_queue); |
1752 | spin_unlock_irq(&iucv_queue_lock); | 1752 | spin_unlock_irq(&iucv_queue_lock); |
1753 | 1753 | ||
1754 | list_for_each_entry_safe(p, n, &task_queue, list) { | 1754 | list_for_each_entry_safe(p, n, &task_queue, list) { |
1755 | list_del_init(&p->list); | 1755 | list_del_init(&p->list); |
1756 | irq_fn[p->data.iptype](&p->data); | 1756 | irq_fn[p->data.iptype](&p->data); |
1757 | kfree(p); | 1757 | kfree(p); |
1758 | } | 1758 | } |
1759 | 1759 | ||
1760 | iucv_active_cpu = -1; | 1760 | iucv_active_cpu = -1; |
1761 | spin_unlock(&iucv_table_lock); | 1761 | spin_unlock(&iucv_table_lock); |
1762 | } | 1762 | } |
1763 | 1763 | ||
1764 | /** | 1764 | /** |
1765 | * iucv_work_fn: | 1765 | * iucv_work_fn: |
1766 | * | 1766 | * |
1767 | * This work function loops over the queue of path pending irq blocks | 1767 | * This work function loops over the queue of path pending irq blocks |
1768 | * created by iucv_external_interrupt, calls the appropriate action | 1768 | * created by iucv_external_interrupt, calls the appropriate action |
1769 | * handler and then frees the buffer. | 1769 | * handler and then frees the buffer. |
1770 | */ | 1770 | */ |
1771 | static void iucv_work_fn(struct work_struct *work) | 1771 | static void iucv_work_fn(struct work_struct *work) |
1772 | { | 1772 | { |
1773 | LIST_HEAD(work_queue); | 1773 | LIST_HEAD(work_queue); |
1774 | struct iucv_irq_list *p, *n; | 1774 | struct iucv_irq_list *p, *n; |
1775 | 1775 | ||
1776 | /* Serialize tasklet, iucv_path_sever and iucv_path_connect. */ | 1776 | /* Serialize tasklet, iucv_path_sever and iucv_path_connect. */ |
1777 | spin_lock_bh(&iucv_table_lock); | 1777 | spin_lock_bh(&iucv_table_lock); |
1778 | iucv_active_cpu = smp_processor_id(); | 1778 | iucv_active_cpu = smp_processor_id(); |
1779 | 1779 | ||
1780 | spin_lock_irq(&iucv_queue_lock); | 1780 | spin_lock_irq(&iucv_queue_lock); |
1781 | list_splice_init(&iucv_work_queue, &work_queue); | 1781 | list_splice_init(&iucv_work_queue, &work_queue); |
1782 | spin_unlock_irq(&iucv_queue_lock); | 1782 | spin_unlock_irq(&iucv_queue_lock); |
1783 | 1783 | ||
1784 | iucv_cleanup_queue(); | 1784 | iucv_cleanup_queue(); |
1785 | list_for_each_entry_safe(p, n, &work_queue, list) { | 1785 | list_for_each_entry_safe(p, n, &work_queue, list) { |
1786 | list_del_init(&p->list); | 1786 | list_del_init(&p->list); |
1787 | iucv_path_pending(&p->data); | 1787 | iucv_path_pending(&p->data); |
1788 | kfree(p); | 1788 | kfree(p); |
1789 | } | 1789 | } |
1790 | 1790 | ||
1791 | iucv_active_cpu = -1; | 1791 | iucv_active_cpu = -1; |
1792 | spin_unlock_bh(&iucv_table_lock); | 1792 | spin_unlock_bh(&iucv_table_lock); |
1793 | } | 1793 | } |
1794 | 1794 | ||
1795 | /** | 1795 | /** |
1796 | * iucv_external_interrupt | 1796 | * iucv_external_interrupt |
1797 | * @code: irq code | 1797 | * @code: irq code |
1798 | * | 1798 | * |
1799 | * Handles external interrupts coming in from CP. | 1799 | * Handles external interrupts coming in from CP. |
1800 | * Places the interrupt buffer on a queue and schedules iucv_tasklet_fn(). | 1800 | * Places the interrupt buffer on a queue and schedules iucv_tasklet_fn(). |
1801 | */ | 1801 | */ |
1802 | static void iucv_external_interrupt(unsigned int ext_int_code, | 1802 | static void iucv_external_interrupt(unsigned int ext_int_code, |
1803 | unsigned int param32, unsigned long param64) | 1803 | unsigned int param32, unsigned long param64) |
1804 | { | 1804 | { |
1805 | struct iucv_irq_data *p; | 1805 | struct iucv_irq_data *p; |
1806 | struct iucv_irq_list *work; | 1806 | struct iucv_irq_list *work; |
1807 | 1807 | ||
1808 | kstat_cpu(smp_processor_id()).irqs[EXTINT_IUC]++; | 1808 | kstat_cpu(smp_processor_id()).irqs[EXTINT_IUC]++; |
1809 | p = iucv_irq_data[smp_processor_id()]; | 1809 | p = iucv_irq_data[smp_processor_id()]; |
1810 | if (p->ippathid >= iucv_max_pathid) { | 1810 | if (p->ippathid >= iucv_max_pathid) { |
1811 | WARN_ON(p->ippathid >= iucv_max_pathid); | 1811 | WARN_ON(p->ippathid >= iucv_max_pathid); |
1812 | iucv_sever_pathid(p->ippathid, iucv_error_no_listener); | 1812 | iucv_sever_pathid(p->ippathid, iucv_error_no_listener); |
1813 | return; | 1813 | return; |
1814 | } | 1814 | } |
1815 | BUG_ON(p->iptype < 0x01 || p->iptype > 0x09); | 1815 | BUG_ON(p->iptype < 0x01 || p->iptype > 0x09); |
1816 | work = kmalloc(sizeof(struct iucv_irq_list), GFP_ATOMIC); | 1816 | work = kmalloc(sizeof(struct iucv_irq_list), GFP_ATOMIC); |
1817 | if (!work) { | 1817 | if (!work) { |
1818 | pr_warning("iucv_external_interrupt: out of memory\n"); | 1818 | pr_warning("iucv_external_interrupt: out of memory\n"); |
1819 | return; | 1819 | return; |
1820 | } | 1820 | } |
1821 | memcpy(&work->data, p, sizeof(work->data)); | 1821 | memcpy(&work->data, p, sizeof(work->data)); |
1822 | spin_lock(&iucv_queue_lock); | 1822 | spin_lock(&iucv_queue_lock); |
1823 | if (p->iptype == 0x01) { | 1823 | if (p->iptype == 0x01) { |
1824 | /* Path pending interrupt. */ | 1824 | /* Path pending interrupt. */ |
1825 | list_add_tail(&work->list, &iucv_work_queue); | 1825 | list_add_tail(&work->list, &iucv_work_queue); |
1826 | schedule_work(&iucv_work); | 1826 | schedule_work(&iucv_work); |
1827 | } else { | 1827 | } else { |
1828 | /* The other interrupts. */ | 1828 | /* The other interrupts. */ |
1829 | list_add_tail(&work->list, &iucv_task_queue); | 1829 | list_add_tail(&work->list, &iucv_task_queue); |
1830 | tasklet_schedule(&iucv_tasklet); | 1830 | tasklet_schedule(&iucv_tasklet); |
1831 | } | 1831 | } |
1832 | spin_unlock(&iucv_queue_lock); | 1832 | spin_unlock(&iucv_queue_lock); |
1833 | } | 1833 | } |
1834 | 1834 | ||
1835 | static int iucv_pm_prepare(struct device *dev) | 1835 | static int iucv_pm_prepare(struct device *dev) |
1836 | { | 1836 | { |
1837 | int rc = 0; | 1837 | int rc = 0; |
1838 | 1838 | ||
1839 | #ifdef CONFIG_PM_DEBUG | 1839 | #ifdef CONFIG_PM_DEBUG |
1840 | printk(KERN_INFO "iucv_pm_prepare\n"); | 1840 | printk(KERN_INFO "iucv_pm_prepare\n"); |
1841 | #endif | 1841 | #endif |
1842 | if (dev->driver && dev->driver->pm && dev->driver->pm->prepare) | 1842 | if (dev->driver && dev->driver->pm && dev->driver->pm->prepare) |
1843 | rc = dev->driver->pm->prepare(dev); | 1843 | rc = dev->driver->pm->prepare(dev); |
1844 | return rc; | 1844 | return rc; |
1845 | } | 1845 | } |
1846 | 1846 | ||
1847 | static void iucv_pm_complete(struct device *dev) | 1847 | static void iucv_pm_complete(struct device *dev) |
1848 | { | 1848 | { |
1849 | #ifdef CONFIG_PM_DEBUG | 1849 | #ifdef CONFIG_PM_DEBUG |
1850 | printk(KERN_INFO "iucv_pm_complete\n"); | 1850 | printk(KERN_INFO "iucv_pm_complete\n"); |
1851 | #endif | 1851 | #endif |
1852 | if (dev->driver && dev->driver->pm && dev->driver->pm->complete) | 1852 | if (dev->driver && dev->driver->pm && dev->driver->pm->complete) |
1853 | dev->driver->pm->complete(dev); | 1853 | dev->driver->pm->complete(dev); |
1854 | } | 1854 | } |
1855 | 1855 | ||
1856 | /** | 1856 | /** |
1857 | * iucv_path_table_empty() - determine if iucv path table is empty | 1857 | * iucv_path_table_empty() - determine if iucv path table is empty |
1858 | * | 1858 | * |
1859 | * Returns 0 if there are still iucv pathes defined | 1859 | * Returns 0 if there are still iucv pathes defined |
1860 | * 1 if there are no iucv pathes defined | 1860 | * 1 if there are no iucv pathes defined |
1861 | */ | 1861 | */ |
1862 | int iucv_path_table_empty(void) | 1862 | int iucv_path_table_empty(void) |
1863 | { | 1863 | { |
1864 | int i; | 1864 | int i; |
1865 | 1865 | ||
1866 | for (i = 0; i < iucv_max_pathid; i++) { | 1866 | for (i = 0; i < iucv_max_pathid; i++) { |
1867 | if (iucv_path_table[i]) | 1867 | if (iucv_path_table[i]) |
1868 | return 0; | 1868 | return 0; |
1869 | } | 1869 | } |
1870 | return 1; | 1870 | return 1; |
1871 | } | 1871 | } |
1872 | 1872 | ||
1873 | /** | 1873 | /** |
1874 | * iucv_pm_freeze() - Freeze PM callback | 1874 | * iucv_pm_freeze() - Freeze PM callback |
1875 | * @dev: iucv-based device | 1875 | * @dev: iucv-based device |
1876 | * | 1876 | * |
1877 | * disable iucv interrupts | 1877 | * disable iucv interrupts |
1878 | * invoke callback function of the iucv-based driver | 1878 | * invoke callback function of the iucv-based driver |
1879 | * shut down iucv, if no iucv-pathes are established anymore | 1879 | * shut down iucv, if no iucv-pathes are established anymore |
1880 | */ | 1880 | */ |
1881 | static int iucv_pm_freeze(struct device *dev) | 1881 | static int iucv_pm_freeze(struct device *dev) |
1882 | { | 1882 | { |
1883 | int cpu; | 1883 | int cpu; |
1884 | struct iucv_irq_list *p, *n; | 1884 | struct iucv_irq_list *p, *n; |
1885 | int rc = 0; | 1885 | int rc = 0; |
1886 | 1886 | ||
1887 | #ifdef CONFIG_PM_DEBUG | 1887 | #ifdef CONFIG_PM_DEBUG |
1888 | printk(KERN_WARNING "iucv_pm_freeze\n"); | 1888 | printk(KERN_WARNING "iucv_pm_freeze\n"); |
1889 | #endif | 1889 | #endif |
1890 | if (iucv_pm_state != IUCV_PM_FREEZING) { | 1890 | if (iucv_pm_state != IUCV_PM_FREEZING) { |
1891 | for_each_cpu_mask_nr(cpu, iucv_irq_cpumask) | 1891 | for_each_cpu_mask_nr(cpu, iucv_irq_cpumask) |
1892 | smp_call_function_single(cpu, iucv_block_cpu_almost, | 1892 | smp_call_function_single(cpu, iucv_block_cpu_almost, |
1893 | NULL, 1); | 1893 | NULL, 1); |
1894 | cancel_work_sync(&iucv_work); | 1894 | cancel_work_sync(&iucv_work); |
1895 | list_for_each_entry_safe(p, n, &iucv_work_queue, list) { | 1895 | list_for_each_entry_safe(p, n, &iucv_work_queue, list) { |
1896 | list_del_init(&p->list); | 1896 | list_del_init(&p->list); |
1897 | iucv_sever_pathid(p->data.ippathid, | 1897 | iucv_sever_pathid(p->data.ippathid, |
1898 | iucv_error_no_listener); | 1898 | iucv_error_no_listener); |
1899 | kfree(p); | 1899 | kfree(p); |
1900 | } | 1900 | } |
1901 | } | 1901 | } |
1902 | iucv_pm_state = IUCV_PM_FREEZING; | 1902 | iucv_pm_state = IUCV_PM_FREEZING; |
1903 | if (dev->driver && dev->driver->pm && dev->driver->pm->freeze) | 1903 | if (dev->driver && dev->driver->pm && dev->driver->pm->freeze) |
1904 | rc = dev->driver->pm->freeze(dev); | 1904 | rc = dev->driver->pm->freeze(dev); |
1905 | if (iucv_path_table_empty()) | 1905 | if (iucv_path_table_empty()) |
1906 | iucv_disable(); | 1906 | iucv_disable(); |
1907 | return rc; | 1907 | return rc; |
1908 | } | 1908 | } |
1909 | 1909 | ||
1910 | /** | 1910 | /** |
1911 | * iucv_pm_thaw() - Thaw PM callback | 1911 | * iucv_pm_thaw() - Thaw PM callback |
1912 | * @dev: iucv-based device | 1912 | * @dev: iucv-based device |
1913 | * | 1913 | * |
1914 | * make iucv ready for use again: allocate path table, declare interrupt buffers | 1914 | * make iucv ready for use again: allocate path table, declare interrupt buffers |
1915 | * and enable iucv interrupts | 1915 | * and enable iucv interrupts |
1916 | * invoke callback function of the iucv-based driver | 1916 | * invoke callback function of the iucv-based driver |
1917 | */ | 1917 | */ |
1918 | static int iucv_pm_thaw(struct device *dev) | 1918 | static int iucv_pm_thaw(struct device *dev) |
1919 | { | 1919 | { |
1920 | int rc = 0; | 1920 | int rc = 0; |
1921 | 1921 | ||
1922 | #ifdef CONFIG_PM_DEBUG | 1922 | #ifdef CONFIG_PM_DEBUG |
1923 | printk(KERN_WARNING "iucv_pm_thaw\n"); | 1923 | printk(KERN_WARNING "iucv_pm_thaw\n"); |
1924 | #endif | 1924 | #endif |
1925 | iucv_pm_state = IUCV_PM_THAWING; | 1925 | iucv_pm_state = IUCV_PM_THAWING; |
1926 | if (!iucv_path_table) { | 1926 | if (!iucv_path_table) { |
1927 | rc = iucv_enable(); | 1927 | rc = iucv_enable(); |
1928 | if (rc) | 1928 | if (rc) |
1929 | goto out; | 1929 | goto out; |
1930 | } | 1930 | } |
1931 | if (cpus_empty(iucv_irq_cpumask)) { | 1931 | if (cpus_empty(iucv_irq_cpumask)) { |
1932 | if (iucv_nonsmp_handler) | 1932 | if (iucv_nonsmp_handler) |
1933 | /* enable interrupts on one cpu */ | 1933 | /* enable interrupts on one cpu */ |
1934 | iucv_allow_cpu(NULL); | 1934 | iucv_allow_cpu(NULL); |
1935 | else | 1935 | else |
1936 | /* enable interrupts on all cpus */ | 1936 | /* enable interrupts on all cpus */ |
1937 | iucv_setmask_mp(); | 1937 | iucv_setmask_mp(); |
1938 | } | 1938 | } |
1939 | if (dev->driver && dev->driver->pm && dev->driver->pm->thaw) | 1939 | if (dev->driver && dev->driver->pm && dev->driver->pm->thaw) |
1940 | rc = dev->driver->pm->thaw(dev); | 1940 | rc = dev->driver->pm->thaw(dev); |
1941 | out: | 1941 | out: |
1942 | return rc; | 1942 | return rc; |
1943 | } | 1943 | } |
1944 | 1944 | ||
1945 | /** | 1945 | /** |
1946 | * iucv_pm_restore() - Restore PM callback | 1946 | * iucv_pm_restore() - Restore PM callback |
1947 | * @dev: iucv-based device | 1947 | * @dev: iucv-based device |
1948 | * | 1948 | * |
1949 | * make iucv ready for use again: allocate path table, declare interrupt buffers | 1949 | * make iucv ready for use again: allocate path table, declare interrupt buffers |
1950 | * and enable iucv interrupts | 1950 | * and enable iucv interrupts |
1951 | * invoke callback function of the iucv-based driver | 1951 | * invoke callback function of the iucv-based driver |
1952 | */ | 1952 | */ |
1953 | static int iucv_pm_restore(struct device *dev) | 1953 | static int iucv_pm_restore(struct device *dev) |
1954 | { | 1954 | { |
1955 | int rc = 0; | 1955 | int rc = 0; |
1956 | 1956 | ||
1957 | #ifdef CONFIG_PM_DEBUG | 1957 | #ifdef CONFIG_PM_DEBUG |
1958 | printk(KERN_WARNING "iucv_pm_restore %p\n", iucv_path_table); | 1958 | printk(KERN_WARNING "iucv_pm_restore %p\n", iucv_path_table); |
1959 | #endif | 1959 | #endif |
1960 | if ((iucv_pm_state != IUCV_PM_RESTORING) && iucv_path_table) | 1960 | if ((iucv_pm_state != IUCV_PM_RESTORING) && iucv_path_table) |
1961 | pr_warning("Suspending Linux did not completely close all IUCV " | 1961 | pr_warning("Suspending Linux did not completely close all IUCV " |
1962 | "connections\n"); | 1962 | "connections\n"); |
1963 | iucv_pm_state = IUCV_PM_RESTORING; | 1963 | iucv_pm_state = IUCV_PM_RESTORING; |
1964 | if (cpus_empty(iucv_irq_cpumask)) { | 1964 | if (cpus_empty(iucv_irq_cpumask)) { |
1965 | rc = iucv_query_maxconn(); | 1965 | rc = iucv_query_maxconn(); |
1966 | rc = iucv_enable(); | 1966 | rc = iucv_enable(); |
1967 | if (rc) | 1967 | if (rc) |
1968 | goto out; | 1968 | goto out; |
1969 | } | 1969 | } |
1970 | if (dev->driver && dev->driver->pm && dev->driver->pm->restore) | 1970 | if (dev->driver && dev->driver->pm && dev->driver->pm->restore) |
1971 | rc = dev->driver->pm->restore(dev); | 1971 | rc = dev->driver->pm->restore(dev); |
1972 | out: | 1972 | out: |
1973 | return rc; | 1973 | return rc; |
1974 | } | 1974 | } |
1975 | 1975 | ||
1976 | /** | 1976 | /** |
1977 | * iucv_init | 1977 | * iucv_init |
1978 | * | 1978 | * |
1979 | * Allocates and initializes various data structures. | 1979 | * Allocates and initializes various data structures. |
1980 | */ | 1980 | */ |
1981 | static int __init iucv_init(void) | 1981 | static int __init iucv_init(void) |
1982 | { | 1982 | { |
1983 | int rc; | 1983 | int rc; |
1984 | int cpu; | 1984 | int cpu; |
1985 | 1985 | ||
1986 | if (!MACHINE_IS_VM) { | 1986 | if (!MACHINE_IS_VM) { |
1987 | rc = -EPROTONOSUPPORT; | 1987 | rc = -EPROTONOSUPPORT; |
1988 | goto out; | 1988 | goto out; |
1989 | } | 1989 | } |
1990 | rc = iucv_query_maxconn(); | 1990 | rc = iucv_query_maxconn(); |
1991 | if (rc) | 1991 | if (rc) |
1992 | goto out; | 1992 | goto out; |
1993 | rc = register_external_interrupt(0x4000, iucv_external_interrupt); | 1993 | rc = register_external_interrupt(0x4000, iucv_external_interrupt); |
1994 | if (rc) | 1994 | if (rc) |
1995 | goto out; | 1995 | goto out; |
1996 | iucv_root = root_device_register("iucv"); | 1996 | iucv_root = root_device_register("iucv"); |
1997 | if (IS_ERR(iucv_root)) { | 1997 | if (IS_ERR(iucv_root)) { |
1998 | rc = PTR_ERR(iucv_root); | 1998 | rc = PTR_ERR(iucv_root); |
1999 | goto out_int; | 1999 | goto out_int; |
2000 | } | 2000 | } |
2001 | 2001 | ||
2002 | for_each_online_cpu(cpu) { | 2002 | for_each_online_cpu(cpu) { |
2003 | /* Note: GFP_DMA used to get memory below 2G */ | 2003 | /* Note: GFP_DMA used to get memory below 2G */ |
2004 | iucv_irq_data[cpu] = kmalloc_node(sizeof(struct iucv_irq_data), | 2004 | iucv_irq_data[cpu] = kmalloc_node(sizeof(struct iucv_irq_data), |
2005 | GFP_KERNEL|GFP_DMA, cpu_to_node(cpu)); | 2005 | GFP_KERNEL|GFP_DMA, cpu_to_node(cpu)); |
2006 | if (!iucv_irq_data[cpu]) { | 2006 | if (!iucv_irq_data[cpu]) { |
2007 | rc = -ENOMEM; | 2007 | rc = -ENOMEM; |
2008 | goto out_free; | 2008 | goto out_free; |
2009 | } | 2009 | } |
2010 | 2010 | ||
2011 | /* Allocate parameter blocks. */ | 2011 | /* Allocate parameter blocks. */ |
2012 | iucv_param[cpu] = kmalloc_node(sizeof(union iucv_param), | 2012 | iucv_param[cpu] = kmalloc_node(sizeof(union iucv_param), |
2013 | GFP_KERNEL|GFP_DMA, cpu_to_node(cpu)); | 2013 | GFP_KERNEL|GFP_DMA, cpu_to_node(cpu)); |
2014 | if (!iucv_param[cpu]) { | 2014 | if (!iucv_param[cpu]) { |
2015 | rc = -ENOMEM; | 2015 | rc = -ENOMEM; |
2016 | goto out_free; | 2016 | goto out_free; |
2017 | } | 2017 | } |
2018 | iucv_param_irq[cpu] = kmalloc_node(sizeof(union iucv_param), | 2018 | iucv_param_irq[cpu] = kmalloc_node(sizeof(union iucv_param), |
2019 | GFP_KERNEL|GFP_DMA, cpu_to_node(cpu)); | 2019 | GFP_KERNEL|GFP_DMA, cpu_to_node(cpu)); |
2020 | if (!iucv_param_irq[cpu]) { | 2020 | if (!iucv_param_irq[cpu]) { |
2021 | rc = -ENOMEM; | 2021 | rc = -ENOMEM; |
2022 | goto out_free; | 2022 | goto out_free; |
2023 | } | 2023 | } |
2024 | 2024 | ||
2025 | } | 2025 | } |
2026 | rc = register_hotcpu_notifier(&iucv_cpu_notifier); | 2026 | rc = register_hotcpu_notifier(&iucv_cpu_notifier); |
2027 | if (rc) | 2027 | if (rc) |
2028 | goto out_free; | 2028 | goto out_free; |
2029 | rc = register_reboot_notifier(&iucv_reboot_notifier); | 2029 | rc = register_reboot_notifier(&iucv_reboot_notifier); |
2030 | if (rc) | 2030 | if (rc) |
2031 | goto out_cpu; | 2031 | goto out_cpu; |
2032 | ASCEBC(iucv_error_no_listener, 16); | 2032 | ASCEBC(iucv_error_no_listener, 16); |
2033 | ASCEBC(iucv_error_no_memory, 16); | 2033 | ASCEBC(iucv_error_no_memory, 16); |
2034 | ASCEBC(iucv_error_pathid, 16); | 2034 | ASCEBC(iucv_error_pathid, 16); |
2035 | iucv_available = 1; | 2035 | iucv_available = 1; |
2036 | rc = bus_register(&iucv_bus); | 2036 | rc = bus_register(&iucv_bus); |
2037 | if (rc) | 2037 | if (rc) |
2038 | goto out_reboot; | 2038 | goto out_reboot; |
2039 | return 0; | 2039 | return 0; |
2040 | 2040 | ||
2041 | out_reboot: | 2041 | out_reboot: |
2042 | unregister_reboot_notifier(&iucv_reboot_notifier); | 2042 | unregister_reboot_notifier(&iucv_reboot_notifier); |
2043 | out_cpu: | 2043 | out_cpu: |
2044 | unregister_hotcpu_notifier(&iucv_cpu_notifier); | 2044 | unregister_hotcpu_notifier(&iucv_cpu_notifier); |
2045 | out_free: | 2045 | out_free: |
2046 | for_each_possible_cpu(cpu) { | 2046 | for_each_possible_cpu(cpu) { |
2047 | kfree(iucv_param_irq[cpu]); | 2047 | kfree(iucv_param_irq[cpu]); |
2048 | iucv_param_irq[cpu] = NULL; | 2048 | iucv_param_irq[cpu] = NULL; |
2049 | kfree(iucv_param[cpu]); | 2049 | kfree(iucv_param[cpu]); |
2050 | iucv_param[cpu] = NULL; | 2050 | iucv_param[cpu] = NULL; |
2051 | kfree(iucv_irq_data[cpu]); | 2051 | kfree(iucv_irq_data[cpu]); |
2052 | iucv_irq_data[cpu] = NULL; | 2052 | iucv_irq_data[cpu] = NULL; |
2053 | } | 2053 | } |
2054 | root_device_unregister(iucv_root); | 2054 | root_device_unregister(iucv_root); |
2055 | out_int: | 2055 | out_int: |
2056 | unregister_external_interrupt(0x4000, iucv_external_interrupt); | 2056 | unregister_external_interrupt(0x4000, iucv_external_interrupt); |
2057 | out: | 2057 | out: |
2058 | return rc; | 2058 | return rc; |
2059 | } | 2059 | } |
2060 | 2060 | ||
2061 | /** | 2061 | /** |
2062 | * iucv_exit | 2062 | * iucv_exit |
2063 | * | 2063 | * |
2064 | * Frees everything allocated from iucv_init. | 2064 | * Frees everything allocated from iucv_init. |
2065 | */ | 2065 | */ |
2066 | static void __exit iucv_exit(void) | 2066 | static void __exit iucv_exit(void) |
2067 | { | 2067 | { |
2068 | struct iucv_irq_list *p, *n; | 2068 | struct iucv_irq_list *p, *n; |
2069 | int cpu; | 2069 | int cpu; |
2070 | 2070 | ||
2071 | spin_lock_irq(&iucv_queue_lock); | 2071 | spin_lock_irq(&iucv_queue_lock); |
2072 | list_for_each_entry_safe(p, n, &iucv_task_queue, list) | 2072 | list_for_each_entry_safe(p, n, &iucv_task_queue, list) |
2073 | kfree(p); | 2073 | kfree(p); |
2074 | list_for_each_entry_safe(p, n, &iucv_work_queue, list) | 2074 | list_for_each_entry_safe(p, n, &iucv_work_queue, list) |
2075 | kfree(p); | 2075 | kfree(p); |
2076 | spin_unlock_irq(&iucv_queue_lock); | 2076 | spin_unlock_irq(&iucv_queue_lock); |
2077 | unregister_reboot_notifier(&iucv_reboot_notifier); | 2077 | unregister_reboot_notifier(&iucv_reboot_notifier); |
2078 | unregister_hotcpu_notifier(&iucv_cpu_notifier); | 2078 | unregister_hotcpu_notifier(&iucv_cpu_notifier); |
2079 | for_each_possible_cpu(cpu) { | 2079 | for_each_possible_cpu(cpu) { |
2080 | kfree(iucv_param_irq[cpu]); | 2080 | kfree(iucv_param_irq[cpu]); |
2081 | iucv_param_irq[cpu] = NULL; | 2081 | iucv_param_irq[cpu] = NULL; |
2082 | kfree(iucv_param[cpu]); | 2082 | kfree(iucv_param[cpu]); |
2083 | iucv_param[cpu] = NULL; | 2083 | iucv_param[cpu] = NULL; |
2084 | kfree(iucv_irq_data[cpu]); | 2084 | kfree(iucv_irq_data[cpu]); |
2085 | iucv_irq_data[cpu] = NULL; | 2085 | iucv_irq_data[cpu] = NULL; |
2086 | } | 2086 | } |
2087 | root_device_unregister(iucv_root); | 2087 | root_device_unregister(iucv_root); |
2088 | bus_unregister(&iucv_bus); | 2088 | bus_unregister(&iucv_bus); |
2089 | unregister_external_interrupt(0x4000, iucv_external_interrupt); | 2089 | unregister_external_interrupt(0x4000, iucv_external_interrupt); |
2090 | } | 2090 | } |
2091 | 2091 | ||
2092 | subsys_initcall(iucv_init); | 2092 | subsys_initcall(iucv_init); |
2093 | module_exit(iucv_exit); | 2093 | module_exit(iucv_exit); |
2094 | 2094 | ||
2095 | MODULE_AUTHOR("(C) 2001 IBM Corp. by Fritz Elfert (felfert@millenux.com)"); | 2095 | MODULE_AUTHOR("(C) 2001 IBM Corp. by Fritz Elfert (felfert@millenux.com)"); |
2096 | MODULE_DESCRIPTION("Linux for S/390 IUCV lowlevel driver"); | 2096 | MODULE_DESCRIPTION("Linux for S/390 IUCV lowlevel driver"); |
2097 | MODULE_LICENSE("GPL"); | 2097 | MODULE_LICENSE("GPL"); |
2098 | 2098 |